thanks for the suggestions. I forgot about my late night reading about better color balanced lights. Unfortunately, the cold head on the E3 takes a set of 4 strait mini-tubes (like the ones in flourescent lanterns). I think the Aristo ones (at least the ones I can see on the B&H webstsite) are the serpentine type. However, they do seem to sell a warm (3000K) as opposed to the 4100K that seems more standard "cool white".
Murray--the filters sound like a good idea. I'll see if I can find any at the San Jose PhotoFair this weekend. The ones I see online are 6x6, and the drawer takes 5x7. I can probably make something work.
Thanks a lot!