I feel like I've seen the color guides on other G3s, but I can't think of them off the top of my head. The original spring basket set, maybe . . . ? G3 Cotton Candy is so lovely, I adore her bubblegum pink body.
I've taken the hair out of a few ponies that have had lines, but I've not seen it bleed in like that! I've seen it on ponies with different hair colors instead of just one.