Update, or merge, or mark as {{historical}} (and link to the current location), these pages:
* https://www.mediawiki.org/wiki/Wikimedia_Foundation_Design/Color_usage
* http://livingstyleguide.wmflabs.org/wiki/Main_Page#Intention_colors
* https://www.mediawiki.org/wiki/Style_guide/Color_selection_and_accessibility
* https://www.mediawiki.org/wiki/Wikimedia_Foundation_Design/How_to_give_design_feedback#Color_Theory
* https://www.mediawiki.org/wiki/User_interface_guidelines#Style
* and more links at https://www.mediawiki.org/wiki/Talk:Accessibility#Colour-blindness_links_and_notes
Consider updating (or at least adding "See also" links to)
* https://en.wikipedia.org/wiki/Help:Using_colours
* https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Accessibility#Color
* https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Text_formatting#Color