Message bubbles: de-duplicate CSS, nicer shadows, color tweaks

3 jobs for visual-fixes in 3 minutes and 56 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Build
passed build-debian-gcc #81672
librem5

00:01:20

 
  Test
passed test:debian-gcc #81673
librem5

00:01:15

 
  Package
passed build-debian-package #81674
librem5

00:01:20