I've noticed in a lot of the pictures people tend to go for a very dark/ blue look.
Is that something people just prefer visually?
Or do some corals like this better?

Compared to everybody else's tank mine looks pretty stark white.
I have a couple of actinics but they only show before and after the white lights turn off.

I chose the white bulbs ( 10000k to 15000k) because I read this article
http://www.reefkeeping.com/issues/2002-08/dw/index.php
and I was interested in coral health and growth.

Since I rely 100% on T5s I figured I needed to get all the light intensity I could get.
How do others feel about the kelvin ratings of lighting?