"funky makeup" is a little bit broad, but I'd suggest trying a local costume shop first. They usually have a supply of theatrical makeup, which might fit your needs.
You can also try Kryolan (http://www.kryolan.com/en/Home/Home.htm
), which is a fantastic stage & movie makeup place. They have everything to make you look stunning; alien or dead & rotting, depending on your mood & the time you're willing to spend putting it on.
MAC also has some great makeups if you're willing to pay the price. I love their pigments- they've got some super bright colors that are unbelievable. You might have to look online- you want their professional stuff if you want the bright colors, not just the normal makeup you get at Macy's.