ive got6 x beunos aires tetra, 6 x pencil tetra and 6 x golden barbs and one random rasbora with a cockatoo dwarf (he killed the other dwarf cichlids, his mate + pair blue rams, little monster that he is) when the blue rams were alive (boo hoo) they seemed to go nicely with the others. they are mostly yellow, white-ish fish so i dont know if thats the sort of colours you want. they look good in a heavily planted tank tho.