Wife is demanding some COLOR!

[Spyd]

Very true!! Other options are:

Foxface Rabbitfish. Nice Yellow / Black & white look. They grow larger but would be fine in a 90G.

Anthias are another great option. Some have beautiful colours, you can keep more than 1 and they swim out in the open. Only concern may be with jumping but you would have to get some opinions on that...

I think a Scopas Tang is a good option size wise as well for a Tang. Not as much colour though.