aznkewlguy,
First, your geos look good and I like the setup too! Second, if you have another tank with a white substrate or just a lighter substrate then try moving the redheads to it, TRUST ME. The dark gravel/sand really drowns out the colors, of course lighting has an affect also.
What I'm trying to say is my avatar pic was taken of my male on pool filter sand and I recently moved him to another tank with that black plant substrate(I forgot the brand) and you wouldn't beleive it is the same fish if I posted a pic right now. If you ever get the chance to change out your substrate, that is if your keeping the geos, then try something lighter, I know you'll like it.

Jamie