I think I had asked this question just a few months ago, maybe try a search for lighting...just last night we picked up a wrap around flourescent fixture for my large sewing rm. { I am trying to avoid the shadows} It has 4 48" bulbs, the description on the lite bulb box says " full spectrum-simulates natural light", color spectrum should be 4100 k or above for better lighting. The bulbs lasts forever so replacing them shouldn't be costly.