- From: Chris Lilley via GitHub <noreply@w3.org>
- Date: Tue, 10 Feb 2026 21:03:26 +0000
- To: public-css-archive@w3.org
Also, from [Appendix A: Deprecated CSS System Colors](https://drafts.csswg.org/css-color-4/#deprecated-system-colors) > User agents must support these keywords, and to mitigate fingerprinting must map them to the (undeprecated) [system colors](https://drafts.csswg.org/css-color-4/#css-system-colors) as listed below. Authors must not use these keywords. [WPT results](https://wpt.fyi/results/css/css-color?label=master&label=experimental&aligned&q=deprecated) show that Chrome/Edge and Mozilla mostly do this, while Safari (strangely, for a fingerprinting vector) mostly does not. Also Chrome does not do this with `ActiveCaption` ([CR bug](https://issues.chromium.org/issues/40823530#comment18)). "map them" is loose spec text; presumably the computed value is the one it should map to? -- GitHub Notification of comment by svgeesus Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13459#issuecomment-3880699972 using your GitHub account -- Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config
Received on Tuesday, 10 February 2026 21:03:27 UTC