Some Manic Panic colors are definitely a little dry and chalky, so you really should find a shop that sells them and test them out. I was recently at a costume shop and I tested out about 10 MP colors, but only found a few that I liked. The ones that were good, however, were GREAT, and I ended up buying Poison Ivy (a nice, medium green) and Neon Orange (just what it sounds like!) for super-cheap prices.
But...the guy at the counter said Manic Panic is going out of business. D: Their stuff is, again, hit or miss for me, but I rely on their Virgin (white) eyeliner; I refuse to use any other white liner. Does anybody know if this is true? I checked their website and I can't find a note about them going out of business.