Still hasnt been fixed.

https://www.sencha.com/forum/showthr...-color-in-scss

Code:
/sass/src/toolbar/Toolbar.scss

@include extjs-toolbar-ui(
    $ui: 'maintenance',
    $background-color: #f9d521, //work
    $text-font-size: 20px, //doesnt
    $text-color: dynamic(red),  //doesnt
    $text-font-weight: dynamic(bold)  //doesnt

)

/sass/var/Component.scss

$toolbar-font-size: dynamic(20px); //works but for every toolbar...
etc works