Just curious, does the red paint on the exterior of the bulb turn some of the green light into red light energy or does only the red light get through...very interesting.as a biology major we used to do experiments with different coloured light filters on plants. photosynthesis is more rapid under red filter as well as blue lights(exceptionally rapid) and photosynthesis doesnt happen at all under a green filter(which is why people use green lights to provide vision durring their dark period...you got me thinking and im going to buy red cfls tomorrow