The WIkidata and Wikimedia icon's use stroke rather than fill color. This means that all variants of those icons look identical.
Requested: Please adapt these icons to use fill so their color scheme can be adapted like other icons.
lib/ooui/themes/wikimediaui/images/icons/logo-Wikidata.svg
lib/ooui/themes/wikimediaui/images/icons/logo-Wikimedia.svg
This currently blocks https://gerrit.wikimedia.org/r/#/c/mediawiki/skins/MinervaNeue/+/522504/