Not only is this scene beautiful, it is full of information. Different deciduous trees turn different colors during the fall. They also do not all turn at the same time (notice the fully green tree surrounded by orange and yellow trees?). So you can get a sense of the amount of variety in this particular portion of the stand just by the fact that there are so many different colors. Also, the vividness and presence of color is affected by weather.
The area this picture came from is mostly hardwood forests, though there are some evergreens found here.
For now though, I’m just going to enjoy the picture and try not to think about the science behind what I am looking at. Creation is a beautiful thing.