It depends on the application and requirements.
yes purple is better than red
Yes purple is better than brown
Yes purple is better than gray
It depends on the shades of the blue red and purple. If the purple is more red, go with red. If more blue, go with blue.
Between blue and purple, blue is more acidic than purple.
no purple does not gowith blue purple goes better with yellow and and so does black
Because purple is better than brown
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.
Blue and red together make purple. For a different shade of purple you can change the shades of blue and red or use more of one color than the other.
it was but he decided he likes blue better so no it is blue
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.