So it looks like Donacabana's design won out! http://schoolido.lu/user/Donacabana/#34200 (go check them out, their art is sO CUTE!)

--All of the uniforms are the same color - Pink

--The number of sparkles represents what year your Idol is in!

--The bow color represents what attribute your Idol is!

Am I missing anything?

EDIT: Male Idols wear the same uniform, only with pants or shorts (if you prefer) ^^ The sparkles would be placed where the pockets would be