I have been hooked on the color choices with T5s as well!

Backlit shadowbox only with a 3000K (!) bulb:


All lights on including Actinics, Fiji Purple, GE Daylight, etc.:


The LED people usually only use Cool White, Blue and Royal Blue so it sounds kind of limited (I happen to love that warm glow in the morning before the rest of the lights come on) but LEDs come in many different K ratings of white as well as different colors.

I should have an LED fixture ready with warm whites, neutral whites and royal blues before the end of the year for my seahorse tank.

I really like my ATI T5 fixture over my big reef tank and would have considered T5 again for the seahorse tank but the shape of the tank limits my lighting choices as far as T5 goes (tank is only 18" wide but 25" deep) so the LEDs seemed like a great fit for a narrow, deep tank.

Can't wait to try them out!