Colour blindness, you could be... The colour blind gen comes from Mum & passed to Son, It very common. Even my own son is colour blind to red, yet I am 100% accurate.
A good test is if you can't tell shades of Brown from Red or Blue from Green see your optometrist for a colour test. Then see the air-force next! Only people with colour blindness can see camouflage nets for some reason. True!
