Hello, I have a theme and would like to be able to set a theme color for the quick picker background which I don't think is currently possible. (I'd like to be able to theme the quick picker to match the background of editor widgets like breadcrumbs)

I forked the repo and found out where to add the theming values in and would love to open a PR!

Background of quick picker theming

Theme breadcrumbs use the default editor widget background

Thanks!