[css-values-4][css-color] Addition of <color> is way underspecified.

[mozilla-apprentice]

A resolution was made for csswg-drafts/#8576.

[css-values-4][css-color] Addition of `<color>` is way underspecified.

• RESOLVED: Colors don’t add; add a note asking for use cases and a warning specifying we might change in the future

Discussion.

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[dholbert]

@BorisChiou do you know if we need a bug for this? I'm not sure if we support the relevant animation features that would let us trigger this sort of addition yet.

[dholbert]

(side note, there are some github-comments after the resolution, which I can imagine might result in further refinements/discussion.)

[BorisChiou]

I guess we may need one bug for this. It seems we support all kinds of procedure (i.e. interpolation, addition, Accumulate):
https://searchfox.org/mozilla-central/rev/daedd554ae8a2c7f420ad77311134c8c298ba318/servo/components/style/values/animated/color.rs#58-72

Tiaan may know more about the current implementation about <color>

[mozilla-apprentice]

https://bugzilla.mozilla.org/show_bug.cgi?id=1836160