@Iniquity what colors did you find, and where? This change should have been done already.

• Using the Chrome inspector on https://www.mediawiki.org/wiki/Help:Tables, I do see the right color:

• Further details:
  • In CSS: mediawiki.legacy/shared.css#L354-L382
  • Related patches: https://gerrit.wikimedia.org/r/#/q/e7a4daf
  • Related phab ticket: T152025: Align MediaWiki core UI elements with WikimediaUI color palette

It might be overridden in Wiki's Common.css (or vector.css)

@JGirault look at table, not wikitable.

Sorry, my fault, wrong decription was.

That part is not coming from Mediawiki, it's from the browser (note the "user agent stylesheet"). We can do that for all tables in Wikimedia enviroment but I'm not so sure.

In T161985#3153429, @Ladsgroup wrote:

That part is not coming from Mediawiki, it's from the browser (note the "user agent stylesheet"). We can do that for all tables in Wikimedia enviroment but I'm not so sure.

Yep, I'm not so sure also, but may be someone has another opinion.

Might be better taken care of in skin styles, especially Vector skin and MobileFrontend, *update 2019-04*: MinervaNeue.