Two compact fluorescent lights of varied color temperature: one cool and one warm.
Canon Rebel XTi, Tamron AF 18-200mm f/3.5-6.3, 1/500, F5.6, 47mm, ISO100, , 20110312-192939rxt
Location: 1985 S. Carpenter Ave., Orange City, FL 32763-7334
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This work is licensed under a Creative Commons Attribution 3.0 License. Please credit me as Richard Thripp.
All you need is a third Ultra White bulb. Would have been interesting on how it would effect the white Balance.
White balance is all relative, as is the color white. In this picture, the yellowish light is probably 3500K and the blueish light is probably 5000K. An incandescent would be around 2700K and most CRT monitors come configured to 9300K.
http://en.wikipedia.org/wiki/File:Incand-3500-5500-color-temp-comparison.png
http://en.wikipedia.org/wiki/Color_temperature