The China Glaze Kaleidoscope Collection is full of holographic glitter and comes in colors that will work with every skin tone. These have recently been discontinued, they are still for sale on the e-tailers (which are listed in my side bar) but I don't know how much longer they will be available for.
I also wanted to apologize for the lack of posts lately. It's the end of the semester so I've been focusing on that. Tomorrow I will be offically on winter break so check back. I have China Glaze Romantiques as well as Carolyn New York Color's Holiday Collection to share.