If I were you,I'd veg them under the cfl's till they got 3-4 nodes. Then you would be safe to turn on the 250 with proper ventilation.Keep in mind that the closer you are able to keep the light,the more dense the final bud will be. It will keep them from stretchin',too. As for the colors you mentioned,the red,orange and so forth. I use a 400 HPS for veg and now 600 HPS for flowering.HPS from start to finish! Grow On!

Ga Grown!