Suggestion: Option to change UI colors

Instead of pink for MP, blue seems better. Pink seems good for HP. I also like to see more colors in the party window instead of white bars. Maybe changing the menu orbs from red/gold to blue/gold is better too. People prefer different colors so adding the option to change these things is nice.

We've been asking for this for colorblind players for years.

Indeed. Good luck!
I know you can change some UI components' appearances. Such as Friend Listed characters' nameplates and HP Bars, and actively engaged enemies, et cetera, but it's not a very comprehensive tool.