Subject: How/why do colored lights affect the growth of plants?

I am doing a science fair project about the effect of colored light on the 
growth of plants (all plants are set under different colored cellophane 
with one control group under nothing).  My hypothesis is that the plants 
under blue or green light will grow better than plants under red or yellow 
since most of earth's light is relfected through the blue-green spectrum.  
I cannot find much information to help with the research part of the 
project.  Can you tell me where I could locate some research information?  
Thanks, 
Jon Friel

Re: How/why do colored lights affect the growth of plants?