[libadwaita] (17 commits) Created branch wip/exalm/background-colors2

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/background-colors2' was created.

Summary of new commits:

  17f49a6... stylesheet: Clean up assistant sidebar
  d8b9cf1... stylesheet: Remove .sidebar border
  f3acec9... demo: Stop overriding sidebar styles
  50dded9... demo: Add .background to the flap sidebar
  f31a82d... demo: Fix a typo
  ee6ac3a... stylesheet: Remove sidebar background
  b040c8a... stylesheet: Don't explicitly set menu colors
  94a394f... stylesheet: Extract popover colors
  aa34b7d... stylesheet: Extract backdrop headerbar color
  5cbfa3b... stylesheet: Reorganize tab border color
  34c84e2... stylesheet: Move notebook tab color to header instead
  51136d5... stylesheet: Refresh tab bar styles
  0d95974... stylesheet: Use $dark_fg and $light_fg less
  ed8776d... stylesheet: Extract card colors
  c385a44... stylesheet: Unify header bar and dark fill colors
  9b4f8ec... stylesheet: Refresh background colors
  b648c6c... stylesheet: Stop special casing popovers in dark variant