I'm starting to get a little color on my bonsai now. We're expecting temps below freezing later this week, so unfortunately I think most of my bonsai won't give much of a color display, even though we are probably close to peak season for fall color.
First picture is an amur maple forest that I've been working on the last couple of years. Some years it turns red, others yellow. I purchased a 3-group and 2-group planting from a friend and combined them, taking out two of the less interesting trees. It's coming along pretty well after hacking back the two side trees and developing new branching.
The next is a wisteria that I dug from my parents' place a few years ago. For scale, it's about 4' in height, and this year is giving pretty nice yellow color.