we have just got rid of a breeding pair of gold banded maroons, if anything the female looked brighter as her gold bands were bigger and were more obvious. Other than that their maroon colour was identicle
They had to go because they were crazily aggressive.
The behaviour of a single clown fish just does not look natural imo as they spend a lot of their time swimming in a corner looking at their reflection. I seriously think you should re-consider this as a 6" nutcase weather single or paired up is too much for 30 gallon tank imo. A pair look far better and show much more natural behaviour.