So you'd think that blackberries should be called uchmaniyot, and blueberries called something else - due to their blue color. But before we rush to judgment, I'll end off with this classic quote from George Carlin:
Why is there no blue food? I can't find blue food - I can't find the flavor of blue! I mean, green is lime; yellow is lemon; orange is orange; red is cherry; what's blue? There's no blue! Oh, they say, "Blueberries!" Uh-uh; blue on the vine, purple on the plate. There's no blue food! Where is the blue food? We want the blue food! Probably instores immortality! They're keeping it from us!