Only if you're eating the skin, and then only marginally.
Most natural vegetable pigments are antioxidants. Purple grapes have more of them than red grapes (which have more than "white" -- actually greenish-yellow -- grapes), but it's all in the skin, which tends to be somewhat bitter, so if you're just eating the fleshy inside and not the skin it doesn't matter much.
Yes blue skittles is better than purple skittles
It depends on the application and requirements.
yes purple is better than red
Yes purple is better than gray
Yes purple is better than brown
Because purple is better than orange
Between blue and purple, blue is more acidic than purple.
Chocolate and Fruity sweets are two different things, you pick! amen. its all your preference
Because purple is better than brown
Yes purple is better than white
No, M&M's are better because they contain chocolate.
It depends on the application and requirements.
They are actually a dark blue, though they can sometimes appear purple. Black berries are more of a purple color than blue berries are.