Can you relate this with color blindless? Most of time I could swear I could see that green,orange and red different but somehow my brain refuses to identify them.
I might be wrong but my understanding was that the cause of color blindness is an abnormality in the retina, not a neurological condition.
There are definitely cases where color-blindness is caused by a neurological issues. Strokes can cause temporary or permanent colorblindness, for example.