I made a post awhile back in the mod request forum asking if anyone could make a mod to change this but so far no takers. What an extremely poor decision by the designers. I really wonder with all the hours the devs and QA must spend playing this game do they really not notice this or think it looks good?
Here is my mod request post. Feel free to add a comment or like over there, maybe if it gets more attention a modder might take it on:
Did you try the option under Accessibility for color blind? You can select from Protanopia, Deuteranopia, Tritanopia. If it's a problem despite using the appropriate setting then I would suggest reporting it as a bug. If nothing else you could turn on text to speech then it will read it to you when you hover the cursor. It would be nice if they had a hotkey to toggle that in case you don't want it reading everything. You can set how long you have to hover for it to start reading.
That isn't to say you shouldn't pursue a mod. Rather bugs should be reported so they, at least, know about...