These are one of my favorite fish, and at different times, I have had/tried different Centropygetypes, to include the Flame. But each one had a taste for something in my tank, the last one I thought I got lucky, but soon found it eating my clam's mantle. So, they are hit or miss at best. The only "Angel's" I've ever had that were truly reef safe were the Genicanthus, i.e. Lamark / Watanabei, which have interesting markings, but aren't going to have the coloration it sounds like you're looking for.
You might look at some fairy wrasses.