Ok, I finally found a mod that fixed the red color on battle maps in Mech_Donald's mod, so thank you for that, but I also had a issue with the crappy contrast settings in the vanilla game. So I took No HDR Mod and Color Grading Mod and also changed the contrast settings to 1 for all the colors where I could find them. The result are maps where the dark areas actually appear black instead of just blue. I think I got all the battle, campaign and historic maps working, but I might have missed some. So my thanks to Mech_Donald for doing most of the work, and for having no issue with me releasing this, and I cannot wait for his next version of the mod. Here is the file and a screenshot (it won't let me put it more right now):
NoHDR_ColorGrading_mod_plus_ContrastCorrection.zip