Was the color he was most known for wearing on stage!

No kid your retarded it's becuz of his most famous song "purple rain"

No Owlhead its not, try doing some research before spouting bullshit. Purple was his favorite color, he wore it on stage in many of his concerts! If I remember right I think he even had it on in the Super Bowl halftime show he did. His main guitar (the one shaped like that stupid symbol he changed his name to) is purple, in fact several of his guitars are purple! Do you even know why he used the term 'Purple Rain' for that song? It's a metaphor for deep sadness, often associated with the 'blues' but blue rain wouldn't have sounded as good now would it?