You can feel it: the cooler nights, the rustle of the leaves, the changing sunlight and the amazing fall colors. Autumn is here and all the wonderful things that come this time of the year. While the gardening chore list is getting smaller, yard cleanup now needs the attention. Here on the front range we are starting to see many trees change and start dropping their leaves. With so many different species and cultivars of trees we have a huge array of fall colors around. This info-graphic explains the science behind the colors.