Let's add experimental support for CSS Color 5 color-mix() - https://drafts.csswg.org/css-color-5/#color-mix.
Because the spec doesn't seem quite finished, we should keep this behind an experimental feature flag for now.
Created attachment 421165 [details]
There are a few FIXMEs in this to work out, and some additional test coverage, especially of hue mixing would be good as well.
I also wonder if we should move the color parsing code to it's own file at this point. It's getting quite involved.
Committed r273244: <https://commits.webkit.org/r273244>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 421165 [details].