Green may be the Plant Kingdom’s color of choice, but it doesn’t have to be that way. In fact, it takes only a little chemical tuning to turn chlorophyll—the light-absorbing pigment that colors plants green—blue, red, orange, or any other hue under the sun.
A few weeks ago Minute Earth raised the question of why plants are green. After all, their green color means they're reflecting green light, so wouldn't black plants that absorb all light be most efficient?
We already know why all plants appear green: it's because they're full of the light-absorbing chemical known as chlorophyll. But since they appears green—bouncing back green and yellow light waves—it means it's not 100 percent efficient at absorbing all of the sun's rays. So why aren't all plants black instead?