I just got an all-red and an all-blue panel to use in a test. I had a Red/Blue panel so all three will get a cell with six tomato seeds in the soil under them. All three panels will be enclosed to no ambient light enters and I'll see how each light performs. Because the panels were slightly damaged (but work fine) they were only $15 each. I wish I could buy them that cheaply at a local store - I would get three dozen of them. Imagine lighting 48 square feet, with more than enough light, and use less than 500 watts.
Mike