Can anyone tell me the name of this anime?

The trailer showed this blonde anime girl with an attitute with rather upbeat music and she paraded around throwing paint everywhere on the stark white room. Little walking humanoid creatures ran about and i believe they exploded into colour. I heard somewhere the featured girl is actually a boy in disguise, which kind of explains the quick scene where he fondles another girls ladies with a smirk on his face. id really like to know the name of this anime? anyone?