There’s not much point in using the green part of the spectrum. Most of it just gets reflected off.
A lab I sometimes do for my photosynthesis unit involves growing aquatic plants under various color lighting. The plants are kept in beakers turned upside down in aquariums so that O2 gas created by photosynthesis is trapped, and you can kind of indirectly gauge the photosynthetic rate under various spectra.
Students always predict the green will be the highest rate, but green barely produces any O2. Blue and red do roughly the same. White is usually a little bit more than blue and red.