[Agenda+] Republish CSS Color 4 and CSS Color 5

*CSS Color 4*

The previous /TR draft of CSS Color 4 was 12 November 2020 and there 
have been many changes since then:
 https://drafts.csswg.org/css-color-4/#changes-from-20201112

Issues are down to 13 open, 148 closed
 
https://github.com/w3c/csswg-drafts/issues?q=is%3Aopen+is%3Aissue+label%3Acss-color-4

The specification has undergone wide review:
 https://github.com/w3c/csswg-drafts/issues/4943

Implementations are picking up.

And the test suite, while known incomplete on some sections such as 
serialization, is looking good with two passes (Safari preview, and BFO 
Publisher) for most tests
 https://test.csswg.org/harness/results/css-color-4_dev/grouped/
 
https://wpt.fyi/results/css/css-color?label=master&label=experimental&aligned&q=css-color

CSS Color 4 is being prepared for CR

*CSS Color 5
*

The previous draft of CSS Color 5 is even older, the FPWD of 10 June 
2020, and again there have been many changes:
 https://drafts.csswg.org/css-color-5/#changes-20200303

Issues are 22 open, 30 closed
 
https://github.com/w3c/csswg-drafts/issues?q=is%3Aopen+is%3Aissue+label%3Acss-color-5

This is a call for an agenda item to discuss any "must have" changes 
before updating both these documents on the W3C Tech Reports page. The 
changes sections are up to date.

-- 
Chris Lilley
@svgeesus
Technical Director @ W3C
W3C Strategy Team, Core Web Design
W3C Architecture & Technology Team, Core Web & Media