Improve contrast of diff file warnings #19097
Merged
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xref. https://github.com/github/accessibility-audits/issues/8665
Description
This PR fixes the contrast ratio of the diff file warnings (like existence of hidden bidi characters or changes in EOL) to improve readability and accessibility.
More specifically, it changes the background color of the file warning from
#{$yellow-200}
to#{$yellow-100}
and the text color from#{$yellow-800}
to#{darken($yellow-700, 10%)}
(which is the color used by thefile-modified
that can, sometimes, be seen right next to it).Testing: one way of forcing this warning is this change:

Screenshots
Release notes
Notes: [Fixed] Increase contrast ratio of icon in diff file warnings