I like all of my fish and with one exception I chose them carefully.
2 clowns: It's a law you have two clowns. I'm just a law-abiding citizen.
1 Tomini Tang: This is a good fish, but I got talked into it. I wouldn't do Tangs if I was doing it again on my size tank. It definitely looks great, swims all over, and helps keep the tank clean, I've just become convinced my tank is too small for Tangs--even for a Tomini (a small Tang).
1 Flamehawk Fish-- I LOVE this guy. He has so much personality and just perches all over the place on the tank. Bright red too. Very colorful.
1 Midas Blenny--I also love this guy. He is so cute sitting in his little hole and mine also swims around quite a bit.
2 Banggai Cardinalfish (bonded pair).-- I think these fish are awesome. It doesn't sound like what you are looking for as mine swim slowly all over my tank, but they do make the rounds. I think they look awesome, but usually when people are thinking "colorful" they are thinking red/oranage/purple/etc. They do have like these dots on their fins that look really cool in the blue lights. (That's my professional language).
Royal Gramma--- I just got her. Beautiful fish, but from what folks tell me sometimes they are shy and sometimes they aren't. I think in most cases it seems like they end up out and about, but I have heard stories of them hiding most of the time. I just got mine so we will see how it goes. Seems like a great, peaceful fish, though.
I'm at my fish limit, so that's it for me, even though I have more I like. I LOVE angels, but worried about compatibility issues.