NASA scientists believe they have found a way to predict the color of plants on planets in other solar systems. Green, yellow or even red-dominant plants may live on extra-solar planets, according to scientists whose two scientific papers appear in the March issue of the journal „Astrobiology“. The scientists studied light absorbed and reflected by organisms on Earth, and determined that if astronomers were to look at the light given off by planets circling distant stars, they might predict that some planets have mostly non-green plants.
https://www.nasa.gov/centers/goddard/news/topstory/2007/spectrum_plants.html
Spectral Signatures of Photosynthesis. I. Review of Earth Organisms