4. Colorblind?
Ducks in general are not colorblind, but there are some implications that Donald Duck may be at least a little colorblind to certain colors. This idea comes from the 1942 wartime cartoon Donald Gets Drafted, in which after correctly identifying a red card during his medical exam, he is unable to identify a green card (that even has “green” written on it). Instead he claims that the card is blue! But that’s “close enough,” and he is still permitted to join the army despite falling short in other areas as well. In a world of over-sized mice and bright colors, we can imagine that colorblindness might make for a cranky Duck!
