I must admit the colors bother me a bit - at least I don't find the pictures of them at all soothing like the way I feel when I look at a row of lovely green plants under a light.
TinyTim has experience with the multi-spectrum LED's too, and asmx91 is using them:
http://www.tomatoville.com/showthread.php?t=46739
He says they work well with daylight.
Your light sounds like it has everything though, the whole spectrum.