Porkpal, that is the most common colorblindness in men - I have a friend who can't tell between brown and green so all the Olive green shades, and browns are obscure for him. I didn't know this until I was at their house one time and he came in with "wrong" color matching in his shirt/pants outfit - his wife said "Nope it ain't gonna work dear" then they told me he's colorblind! I think there are many people that have this and it just isn't talked about !
