I think it really just depends on the girl. If she's confident and her hair doesn't look like a crazy mess, then it can be really attractive. Sometimes when I see girls with several colors, it just seems like too much. So just make sure you're doing colors that are going to flatter your features. :)
if you want, will have to be pretty descriptive if you wan't all those in one.
Of course most people will think 'wtf?' because it is abnormal. Sometimes girls can really pull it off but generally seems to be an emo girl kind of thing based on what I've seen. I'm sure some will like it depending how it's done.