I'm color challenged as well - profoundly, according to my opthalmolagist. (I don't think I spelled that right, but I sincerely tried!)
It is somewhat limiting, but I have discovered that if I use no more than 4 fabrics, plus a neutral for sashing or whatever, my quilts come out well. If the fabrics are very busy, then I can't use them together - it's just too much for my brain to handle.
So, like you, if I have any doubt about colors/fabrics working together, I ask for help.
You do have the advantage of making the quilt for yourself - which means anything you like together is fine!