Increase contrast of placeholders to meet WCAG
Created by: felixfbecker
Fixes #11963 (closed). I kept the RGB the same (just referenced the existing variables) but bumped the alpha channel from 50% to 70%.
Created by: felixfbecker
Fixes #11963 (closed). I kept the RGB the same (just referenced the existing variables) but bumped the alpha channel from 50% to 70%.