I used daylight cfl's for vegging my plants too, and my plants never got that light colored. I'm not saying it's a problem, just makes me think it might be the strain instead.

I use straight MG all-purpose plant food. I plan on running over to my local hydro store soon and picking up something a little better for bud, but for now the MG is doing fine.

Regardless, I would certainly look into what nutes you want to use before you start flowering, if not sooner.