Oops, clicked the wrong button. Damn this new harvest. Anyway there are many more things involved in plant growth than chlorophyll. Flavinoids provide antioxidants and vitamins, and come in green, yellow and orange, as well as some other colors.

The addition of 24% green light (500 to 600 nm) to red and blue LEDs (RGB treatment) enhanced plant growth. The RGB treatment plants produced more biomass than the plants grown under the cool-white fluorescent lamps (CWF treatment)

Plants use wavelengths between 400-700 nm to carry out photosynthesis, called photosynthetically active radiation (PAR). Within that range there are photosynthesis response peaks at 440 nm (blue light) and 660 nm (far red). Of the potentially usable PAR falling on an upper leaf of a plant, about 80% is absorbed. The remainder 20% is mostly in the green wavelengths and most is transmitted down to lower leaves in the canopy, the ground below or reflected back.

Higher plants seem to require all the spectrum bands, except for the band wavelengths 800 nm, of the sunlight coming on the Earth's surface.

3) Maximum photosynthesis of canopies is possible only under combinations of blue, green and red radiation. Any kind of combinations of two of these wavebands or with only one spectral region, always reduces productivity.

The action spectrum for the initiation of fruiting (primordium formation) in Favolus arcularius was determined on the equal response basis. The detectable effect of light was observed in the region between 350 to 560 nanometers, showing six distinct peaks at 374, 398, 424, 446, 480, and 514 nanometers. In otherwords, purple, blue and green.

All these quotes are from reputable sources like the Dept. of Agriculture and stuff. Not just people blowing photons out their ass.