[css-fonts-4] Inconsistent order of override-colors precedence

[drott]

https://drafts.csswg.org/css-fonts-4/#override-color

If the keys of multiple distinct key/value pairs identify the same color index (either by name or by integer), the first key is used for the purposes of rendering. However, for serialization purposes, both key/value pairs are present.

IMO this seems inconsistent with the usual ways of CSS in which later declarations override earlier ones. For the sake of consistency I suggest to change that to the last indexed override's value prevailing.

Was there some context that I missed for why it was defined this way around?

[svgeesus]

@litherum it looks like you added that part ?

[litherum]

Oh, I don't have any opinion about which one should win. I just needed to make a rule, so I made one. Feel free to make a PR to switch the rule around.