A colorful fish for a 55?

[traco]

I've currently got two black perculas in my 55 gallon. Will be setting up a 15 gallon sump once I get an overflow unit and have some live rock in it (have about 30 lbs of live rock so far) and am running a Deltec 300 for a skimmer which will be going in the sump also.

I may have some rics and zoas if I can find some colorful ones.