Modified background color for admin toolbar manage button

Here is the patch with the removed CSS lines.

The patch in #2 changes the way that adminimal admin toolbar has previously been styled in a jarring way by allowing a light background color scheme pass through on the active top level menu items.

I've attached a patch that restores the styling to match previous dark background version of the adminimal admin toolbar.

I put the patch from comment #4 into a MR.

hello @amanire , I have checked your MR on drupal 10.3.1.
adminimal_admin_toolbar version 2.0.x.

The changes are working as expected and now the manage button is seen with white text and white hamburger icon and visible correctly on the admin toolbar.

Added before and after screenshots for reference.
RTBC++

Nice! I've been using the change on prod. I think we can update the issue status.