not to sure on this one but i will take a guess and say, no. There wont be any benefit. Plants depend on both red and blue light to photosynthesize properly, and blue is mostly just for internode length. Probably would make your plant hermie or maybe just make it do some crazy shit none of us have ever seen. Just my opinion. Im sure i could ramble on a little more, but i dont think i would be telling you anything you dont know, lol. Try it, and let us know, definitely an interesting experiment.