sogo/UI/WebServerResources/scss/components/bottomSheet/bottomSheet-theme.scss

md-bottom-sheet.md-THEME_NAME-theme {
  background-color: '{{background-50}}';
  border-top-color: '{{background-300}}';

  &.md-list {
    md-item {
      color: '{{foreground-1}}';
    }
  }

  .md-subheader {
    background-color: '{{background-50}}';
  }

  .md-subheader {
    color: '{{foreground-1}}';
  }
}