[css-color-5] Spec wording on which color keywords are valid

[tiaanl]

Referring to this line:

csswg-drafts/css-color-5/Overview.bs

Line 847 in 3b93f24

referring to one of the channels of the [=origin color=].

It reads: ...or be specified as a channel keyword referring to one of the channels of the origin color.

At this point there is no mention of the origin color being converted to the color being specified yet, so the assumption might be that specifying rgb(from hsl(0, 100% 50%) h s l) the h, s and l keywords should work.

[svgeesus]

Fair enough.

The spec does go on to say

If the originally specified color space for the origin color used a different color function, it’s first converted into the chosen color function, so it has meaningful values for the channels.

But perhaps that does need to be said earlier.

[svgeesus]

@tiaanl Is the spec clearer now?

[tiaanl]

@svgeesus Much clearer, thanks