CFL Bulb Website

http://www.lightbulbsdirect.com/page/001/CTGY/A-Shape

Ses provided along with this info:
I usually buy SKB13EAPDL CF / A-Shape 13 Watt Day Light ($8.05)

I always get bulbs with 5000K or higher--closest to natural full spectrum light. I used to be bothered by the yellowish green color myself. It doesn't cost any extra for a higher Kelvin rated bulb.