diff --git a/gui/core/json_settings.py b/gui/core/json_settings.py
index ae68034..bdd795f 100644
--- a/gui/core/json_settings.py
+++ b/gui/core/json_settings.py
@@ -26,7 +26,7 @@ class Settings(object):
     # ///////////////////////////////////////////////////////////////
     json_file = "settings.json"
     app_path = os.path.abspath(os.getcwd())
-    settings_path = os.path.join(app_path, json_file)
+    settings_path = os.path.normpath(os.path.join(app_path, json_file))
     if not os.path.isfile(settings_path):
         print(f"WARNING: \"settings.json\" not found! check in the folder {settings_path}")
     
diff --git a/gui/core/json_themes.py b/gui/core/json_themes.py
index c5b6535..6875ca1 100644
--- a/gui/core/json_themes.py
+++ b/gui/core/json_themes.py
@@ -19,29 +19,52 @@
 import json
 import os
 
+# IMPORT SETTINGS
+# ///////////////////////////////////////////////////////////////
+from gui.core.json_settings import Settings
+
 # APP THEMES
 # ///////////////////////////////////////////////////////////////
-class Settings(object):
+class Themes(object):
+    # LOAD SETTINGS
+    # ///////////////////////////////////////////////////////////////
+    setup_settings = Settings()
+    _settings = setup_settings.items
+
     # APP PATH
     # ///////////////////////////////////////////////////////////////
-    json_file = "settings.json"
+    json_file = f"gui/themes/{_settings['theme_name']}.json"
     app_path = os.path.abspath(os.getcwd())
-    settings_path = os.path.join(app_path, json_file)
+    settings_path = os.path.normpath(os.path.join(app_path, json_file))
     if not os.path.isfile(settings_path):
-        print(f"WARNING: \"settings.json\" not found! check in the folder {settings_path}")
-    
+        print(f"WARNING: \"gui/themes/{_settings['theme_name']}.json\" not found! check in the folder {settings_path}")
+
     # INIT SETTINGS
     # ///////////////////////////////////////////////////////////////
     def __init__(self):
-        super(Settings, self).__init__()
+        super(Themes, self).__init__()
 
         # DICTIONARY WITH SETTINGS
         self.items = {
-            "app_name" : "",
-            "custom_title_bar" : True,
-            "startup_size" : [],
-            "minimum_size" : [],
-            "theme_name" : ""
+            "theme_name" : "",
+            "app_color" : {
+                "dark_one" : "",
+                "dark_two" : "",
+                "dark_three" : "",
+                "dark_four" : "",
+                "bg_one" : "",
+                "bg_two" : "",
+                "icon_normal" : "",
+                "icon_hover" : "",
+                "icon_pressed" : "",
+                "icon_active" : "",
+                "context_color" : "",
+                "context_hover" : "",
+                "context_pressed" : "",
+                "text_title" : "",
+                "text_foreground" : "",
+                "text_description" : ""
+            }
         }
 
         # DESERIALIZE
diff --git a/gui/themes/default.json b/gui/themes/default.json
new file mode 100644
index 0000000..38d332b
--- /dev/null
+++ b/gui/themes/default.json
@@ -0,0 +1,21 @@
+{
+    "theme_name" : "Default",
+    "app_color" : {
+        "dark_one" : "#1b1e23",
+        "dark_two" : "#1e2229",
+        "dark_three" : "#21252d",
+        "dark_four" : "#272c36",
+        "bg_one" : "#2c313c",
+        "bg_two" : "#343b48",
+        "icon_normal" : "#c3ccdf",
+        "icon_hover" : "#dce1ec",
+        "icon_pressed" : "#edf0f5",
+        "icon_active" : "#f5f6f9",
+        "context_color" : "#568af2",
+        "context_hover" : "#6c99f4",
+        "context_pressed" : "#3f6fd1",
+        "text_title" : "#dce1ec",
+        "text_foreground" : "#8a95aa",
+        "text_description" : "#6c7b95"
+    }
+}
\ No newline at end of file
diff --git a/gui/uis/windows/main_window/ui_main.py b/gui/uis/windows/main_window/ui_main.py
index fc55860..416b801 100644
--- a/gui/uis/windows/main_window/ui_main.py
+++ b/gui/uis/windows/main_window/ui_main.py
@@ -26,6 +26,10 @@ from qt_core import *
 # ///////////////////////////////////////////////////////////////
 from gui.core.json_settings import Settings
 
+# IMPORT THEME COLORS
+# ///////////////////////////////////////////////////////////////
+from gui.core.json_themes import Themes
+
 # IMPORT PY ONE DARK WIDGETS
 # ///////////////////////////////////////////////////////////////
 from gui.widgets import *
@@ -42,15 +46,30 @@ class UI_MainWindow(object):
         settings = Settings()
         self.settings = settings.items
 
+        # LOAD THEME COLOR
+        # ///////////////////////////////////////////////////////////////
+        themes = Themes()
+        self.themes = themes.items
+
         # SET INITIAL PARAMETERS
         parent.setMinimumSize(self.settings["startup_size"][0], self.settings["startup_size"][1])
         
         # LOAD PY WINDOW CUSTOM WIDGET
+        # Add inside PyWindow "layout" all Widgets
         # ///////////////////////////////////////////////////////////////
-        self.window = PyWindow(parent)
-
-        # TEXT
-        self.label = QLabel(self.settings["app_name"], self.window)        
+        self.window = PyWindow(
+            parent,
+            bg_color = self.themes["app_color"]["bg_one"],
+            border_color = self.themes["app_color"]["bg_two"],
+            text_color = self.themes["app_color"]["text_foreground"]
+        )
+        
+        # ADD WIDGETS TO "PyWindow"
+        # Add here your custom widgets or default widgets
+        # ///////////////////////////////////////////////////////////////
+        self.window.layout.addWidget(QLabel(self.settings["app_name"]))
+        self.window.layout.addWidget(QLabel(self.settings["app_name"]))
 
         # ADD CENTRAL WIDGET
-        parent.setCentralWidget(self.window)
\ No newline at end of file
+        parent.setCentralWidget(self.window)
+        parent.setContentsMargins(10,10,10,10)
\ No newline at end of file
diff --git a/gui/widgets/__init__.py b/gui/widgets/__init__.py
index 1aa46af..4df82f7 100644
--- a/gui/widgets/__init__.py
+++ b/gui/widgets/__init__.py
@@ -20,4 +20,8 @@
 
 # PY WINDOW
 # ///////////////////////////////////////////////////////////////
-from . py_window import PyWindow
\ No newline at end of file
+from . py_window import PyWindow
+
+# RESIZE GRIP
+# ///////////////////////////////////////////////////////////////
+from . py_grips import PyGrips
\ No newline at end of file
diff --git a/gui/widgets/py_grips/__init__.py b/gui/widgets/py_grips/__init__.py
new file mode 100644
index 0000000..a4fda03
--- /dev/null
+++ b/gui/widgets/py_grips/__init__.py
@@ -0,0 +1,17 @@
+# ///////////////////////////////////////////////////////////////
+#
+# BY: WANDERSON M.PIMENTA
+# PROJECT MADE WITH: Qt Designer and PySide6
+# V: 1.0.0
+#
+# This project can be used freely for all uses, as long as they maintain the
+# respective credits only in the Python scripts, any information in the visual
+# interface (GUI) can be modified without any implication.
+#
+# There are limitations on Qt licenses if you want to use your products
+# commercially, I recommend reading them on the official website:
+# https://doc.qt.io/qtforpython/licenses.html
+#
+# ///////////////////////////////////////////////////////////////
+
+from . py_grips import PyGrips
diff --git a/gui/widgets/py_grips/py_grips.py b/gui/widgets/py_grips/py_grips.py
new file mode 100644
index 0000000..6fd9624
--- /dev/null
+++ b/gui/widgets/py_grips/py_grips.py
@@ -0,0 +1,163 @@
+# ///////////////////////////////////////////////////////////////
+#
+# BY: WANDERSON M.PIMENTA
+# PROJECT MADE WITH: Qt Designer and PySide6
+# V: 1.0.0
+#
+# This project can be used freely for all uses, as long as they maintain the
+# respective credits only in the Python scripts, any information in the visual
+# interface (GUI) can be modified without any implication.
+#
+# There are limitations on Qt licenses if you want to use your products
+# commercially, I recommend reading them on the official website:
+# https://doc.qt.io/qtforpython/licenses.html
+#
+# ///////////////////////////////////////////////////////////////
+
+# IMPORT PACKAGES AND MODULES
+# ///////////////////////////////////////////////////////////////
+import sys
+
+# IMPORT QT CORE
+# ///////////////////////////////////////////////////////////////
+from qt_core import *
+
+class PyGrips(QWidget):
+    def __init__(self, parent, position, disable_color = False):
+
+        # SETUP UI
+        QWidget.__init__(self)
+        self.parent = parent
+        self.setParent(parent)
+        self.wi = Widgets()
+
+        # SHOW TOP GRIP
+        if position == Qt.TopEdge:
+            self.wi.top(self)
+            self.setGeometry(0, 0, self.parent.width(), 10)
+            self.setMaximumHeight(10)
+
+            # RESIZE TOP
+            def resize_top(event):
+                delta = event.pos()
+                height = max(self.parent.minimumHeight(), self.parent.height() - delta.y())
+                geo = self.parent.geometry()
+                geo.setTop(geo.bottom() - height)
+                self.parent.setGeometry(geo)
+                event.accept()
+            self.wi.top_grip.mouseMoveEvent = resize_top
+
+            # ENABLE COLOR
+            if disable_color:
+                self.wi.top_grip.setStyleSheet("background: transparent")
+
+        # SHOW BOTTOM GRIP
+        elif position == Qt.BottomEdge:
+            self.wi.bottom(self)
+            self.setGeometry(0, self.parent.height() - 10, self.parent.width(), 10)
+            self.setMaximumHeight(10)
+
+            # RESIZE BOTTOM
+            def resize_bottom(event):
+                delta = event.pos()
+                height = max(self.parent.minimumHeight(), self.parent.height() + delta.y())
+                self.parent.resize(self.parent.width(), height)
+                event.accept()
+            self.wi.bottom_grip.mouseMoveEvent = resize_bottom
+
+            # ENABLE COLOR
+            if disable_color:
+                self.wi.bottom.setStyleSheet("background: transparent")
+
+        # SHOW LEFT GRIP
+        elif position == Qt.LeftEdge:
+            self.wi.left(self)
+            self.setGeometry(0, 10, 10, self.parent.height())
+            self.setMaximumWidth(10)
+
+            # RESIZE LEFT
+            def resize_left(event):
+                delta = event.pos()
+                width = max(self.parent.minimumWidth(), self.parent.width() - delta.x())
+                geo = self.parent.geometry()
+                geo.setLeft(geo.right() - width)
+                self.parent.setGeometry(geo)
+                event.accept()
+            self.wi.left_grip.mouseMoveEvent = resize_left
+
+            # ENABLE COLOR
+            if disable_color:
+                self.wi.left_grip.setStyleSheet("background: transparent")
+
+        # RESIZE RIGHT
+        elif position == Qt.RightEdge:
+            self.wi.right(self)
+            self.setGeometry(self.parent.width() - 10, 10, 10, self.parent.height())
+            self.setMaximumWidth(10)
+
+            def resize_right(event):
+                delta = event.pos()
+                width = max(self.parent.minimumWidth(), self.parent.width() + delta.x())
+                self.parent.resize(width, self.parent.height())
+                event.accept()
+            self.wi.right_grip.mouseMoveEvent = resize_right
+
+            # ENABLE COLOR
+            if disable_color:
+                self.wi.right_grip.setStyleSheet("background: transparent")
+
+
+    def mouseReleaseEvent(self, event):
+        self.mousePos = None
+
+    def resizeEvent(self, event):
+        if hasattr(self.wi, 'top_grip'):
+            self.wi.top_grip.setGeometry(0, 0, self.width(), 10)
+
+        elif hasattr(self.wi, 'bottom_grip'):
+            self.wi.bottom_grip.setGeometry(0, 0, self.width(), 10)
+
+        elif hasattr(self.wi, 'left_grip'):
+            self.wi.left_grip.setGeometry(0, 0, 10, self.height() - 20)
+
+        elif hasattr(self.wi, 'right_grip'):
+            self.wi.right_grip.setGeometry(0, 0, 10, self.height() - 20)
+
+class Widgets(object):
+    def top(self, Form):
+        if not Form.objectName():
+            Form.setObjectName(u"Form")
+        self.top_grip = QFrame(Form)
+        self.top_grip.setObjectName(u"top_grip")
+        self.top_grip.setGeometry(QRect(0, 0, 500, 10))
+        self.top_grip.setStyleSheet(u"background-color: rgb(85, 255, 255);")
+        self.top_grip.setCursor(QCursor(Qt.SizeVerCursor))
+
+    def bottom(self, Form):
+        if not Form.objectName():
+            Form.setObjectName(u"Form")
+        self.bottom_grip = QFrame(Form)
+        self.bottom_grip.setObjectName(u"bottom_grip")
+        self.bottom_grip.setGeometry(QRect(0, 0, 500, 10))
+        self.bottom_grip.setStyleSheet(u"background-color: rgb(85, 170, 0);")
+        self.bottom_grip.setCursor(QCursor(Qt.SizeVerCursor))
+
+    def left(self, Form):
+        if not Form.objectName():
+            Form.setObjectName(u"Form")
+        self.left_grip = QFrame(Form)
+        self.left_grip.setObjectName(u"left")
+        self.left_grip.setGeometry(QRect(0, 10, 10, 480))
+        self.left_grip.setMinimumSize(QSize(10, 0))
+        self.left_grip.setCursor(QCursor(Qt.SizeHorCursor))
+        self.left_grip.setStyleSheet(u"background-color: rgb(255, 121, 198);")
+
+    def right(self, Form):
+        if not Form.objectName():
+            Form.setObjectName(u"Form")
+        self.right_grip = QFrame(Form)
+        self.right_grip.setObjectName(u"right")
+        self.right_grip.setGeometry(QRect(0, 0, 10, 500))
+        self.right_grip.setMinimumSize(QSize(10, 0))
+        self.right_grip.setCursor(QCursor(Qt.SizeHorCursor))
+        self.right_grip.setStyleSheet(u"background-color: rgb(255, 0, 127);")
diff --git a/gui/widgets/py_window/py_window.py b/gui/widgets/py_window/py_window.py
index 40f15db..3792a41 100644
--- a/gui/widgets/py_window/py_window.py
+++ b/gui/widgets/py_window/py_window.py
@@ -26,10 +26,30 @@ from qt_core import *
 # ///////////////////////////////////////////////////////////////
 from gui.core.json_settings import Settings
 
+# IMPORT PY GRIP
+# ///////////////////////////////////////////////////////////////
+from gui.widgets.py_grips import PyGrips
+
+# IMPORT STYLES
+# ///////////////////////////////////////////////////////////////
+from . styles import Styles
+
 # PY WINDOW
 # ///////////////////////////////////////////////////////////////
-class PyWindow(QWidget):
-    def __init__(self, parent):
+class PyWindow(QFrame):
+    def __init__(
+        self,
+        parent,
+        layout = Qt.Vertical,
+        margin = 10,
+        bg_color = "#2c313c",
+        text_color = "#fff",
+        text_font = "9pt 'Segoe UI'",
+        border_radius = 10,
+        border_size = 2,
+        border_color = "#343b48",
+        enable_shadow = True
+    ):
         super(PyWindow, self).__init__()
 
         # LOAD SETTINGS
@@ -37,20 +57,109 @@ class PyWindow(QWidget):
         settings = Settings()
         self.settings = settings.items
 
-        # APP MARGINS LAYOUT
+        # PROPERTIES
         # ///////////////////////////////////////////////////////////////
-        self.app_margins_layout = QVBoxLayout(self)
-        self.app_margins_layout.setContentsMargins(0,0,0,0)
-        self.app_margins_layout.setObjectName("app_margins_layout")
+        self.parent = parent
+        self.layout = layout
+        self.margin = margin
+        self.bg_color = bg_color
+        self.text_color = text_color
+        self.text_font = text_font
+        self.border_radius = border_radius
+        self.border_size = border_size
+        self.border_color = border_color
+        self.enable_shadow = enable_shadow
 
-        # BG APP
-        # ///////////////////////////////////////////////////////////////
-        self.bg_app = QFrame(self)
-        self.bg_app.setStyleSheet("background: #333")
-        self.bg_app.setObjectName("bg_app")
+        # OBJECT NAME
+        # ///////////////////////////////////////////////////////////////   
+        self.setObjectName("pod_bg_app")
 
-        # ADD WIDGETS TO APP MARGINS LAUOUT
+        # APPLY STYLESHEET
+        # /////////////////////////////////////////////////////////////// 
+        self.set_stylesheet()
+
+        # ADD LAYOUT
         # ///////////////////////////////////////////////////////////////
-        self.app_margins_layout.addWidget(self.bg_app)
-        
+        if layout == Qt.Vertical:
+            # VERTICAL LAYOUT
+            self.layout = QVBoxLayout(self)
+        else:
+            # HORIZONTAL LAYOUT
+            self.layout = QHBoxLayout(self)
+        self.layout.setContentsMargins(margin, margin, margin, margin)
+
+        # ADD GRIPS
+        # ///////////////////////////////////////////////////////////////
+        if self.settings["custom_title_bar"]:
+            self.left_grip = PyGrips(parent, Qt.LeftEdge)
+            self.right_grip = PyGrips(parent, Qt.RightEdge)
+            self.top_grip = PyGrips(parent, Qt.TopEdge)
+            self.bottom_grip = PyGrips(parent, Qt.BottomEdge)
+            # UPDATE WHEN RESIZE
+            parent.resizeEvent = self._resize_grips
+
+        # ADD DROP SHADOW
+        # ///////////////////////////////////////////////////////////////
+        if self.settings["custom_title_bar"]:
+            if enable_shadow:
+                self.shadow = QGraphicsDropShadowEffect()
+                self.shadow.setBlurRadius(25)
+                self.shadow.setXOffset(0)
+                self.shadow.setYOffset(0)
+                self.shadow.setColor(QColor(0, 0, 0, 120))
+                self.setGraphicsEffect(self.shadow)
+
+    # APPLY AND UPDATE STYLESHEET
+    # ///////////////////////////////////////////////////////////////
+    def set_stylesheet(
+        self,
+        bg_color = None,
+        border_radius = None,
+        border_size = None,
+        border_color = None,
+        text_color = None,
+        text_font = None
+    ):
+        # CHECK BG COLOR
+        if border_radius != None: internal_bg_color = bg_color
+        else: internal_bg_color = self.bg_color
+
+        # CHECK BORDER RADIUS
+        if border_radius != None: internal_border_radius = border_radius
+        else: internal_border_radius = self.border_radius
+
+        # CHECK BORDER SIZE
+        if border_size != None: internal_border_size = border_size
+        else: internal_border_size = self.border_size
+
+        # CHECK BORDER COLOR
+        if text_color != None: internal_text_color = text_color
+        else: internal_text_color = self.text_color
+
+        # CHECK TEXT COLOR
+        if border_color != None: internal_border_color = border_color
+        else: internal_border_color = self.border_color
+
+        # CHECK TEXT COLOR
+        if text_font != None: internal_text_font = text_font
+        else: internal_text_font = self.text_font
+
+        self.setStyleSheet(Styles.bg_style.format(
+            _bg_color = internal_bg_color,
+            _border_radius = internal_border_radius,
+            _border_size = internal_border_size,
+            _border_color = internal_border_color,
+            _text_color = internal_text_color,
+            _text_font = internal_text_font
+        ))
+    
+    # RESIZE GRIPS AND CHANGE POSITION
+    # Resize or change position when window is resized
+    # ///////////////////////////////////////////////////////////////
+    def _resize_grips(self, event):
+        if self.settings["custom_title_bar"]:
+            self.left_grip.setGeometry(0, 10, 10, self.parent.height())
+            self.right_grip.setGeometry(self.parent.width() - 10, 10, 10, self.parent.height())
+            self.top_grip.setGeometry(0, 0, self.parent.width(), 10)
+            self.bottom_grip.setGeometry(0, self.parent.height() - 10, self.parent.width(), 10)
         
\ No newline at end of file
diff --git a/gui/widgets/py_window/styles.py b/gui/widgets/py_window/styles.py
new file mode 100644
index 0000000..a4e74e9
--- /dev/null
+++ b/gui/widgets/py_window/styles.py
@@ -0,0 +1,28 @@
+# ///////////////////////////////////////////////////////////////
+#
+# BY: WANDERSON M.PIMENTA
+# PROJECT MADE WITH: Qt Designer and PySide6
+# V: 1.0.0
+#
+# This project can be used freely for all uses, as long as they maintain the
+# respective credits only in the Python scripts, any information in the visual
+# interface (GUI) can be modified without any implication.
+#
+# There are limitations on Qt licenses if you want to use your products
+# commercially, I recommend reading them on the official website:
+# https://doc.qt.io/qtforpython/licenses.html
+#
+# ///////////////////////////////////////////////////////////////
+
+class Styles(object):
+    bg_style = """
+    #pod_bg_app {{
+        background-color: {_bg_color};
+        border-radius: {_border_radius};
+        border: {_border_size}px solid {_border_color};
+    }}
+    QFrame {{ 
+        color: {_text_color};
+        font: {_text_font};
+    }}
+    """
\ No newline at end of file