I'm not color blind, yet that is what I see, too. Makes me wonder about the brain's color-processing. My guess is small variations are ignored by the brain beca

I'm not color blind, yet that is what I see, too. Makes me wonder about the brain's color-processing. My guess is small variations are ignored by the brain because slightly changing light conditions can cause all colors to vary slightly over time. Your brain filters them out so you can only tell when something really is changing.