Toolbar specific variables
$gbc-ToolBarWidget-trigger-color
Type: color
Default value: $theme-primary-background-color
Computed value: #1976d2
$gbc-ToolBarWidget-font-size-ratio
Type: number
Default value: $theme-font-size-ratio
Computed value: 0.8
$gbc-ToolBarWidget-hover-color
Type: color
Default value: $theme-primary-faded-background-color
Computed value: #bbdefb
$gbc-ToolBarSeparatorWidget-color
Type: color
Default value: $theme-separator-color
Computed value: #e0e0e0
$gbc-ToolBarItemWidget-icon-size
Type: size
Default value: $theme-small-icon-size
Computed value: 16px