CichlidFish.com - Fish That Think.

Hi guys,
I'm trying to find the best type of lighting tube to bring out the colours of my fish, I have a power glo tube in the smaller of my two large tanks, which is a very bright white light and this works really well for the fish in that tank. However I have barbs and frontosa's in the other large tank, at the mo the tube in there is quite yellow, and compared to my other tubing makes the water look dirty and doesn't do the fish justice
I've been out to purchase new tubes but there are so many different types and colours, pink, blue's and white. Obviously they are white lights with tints. Any suggestions?