Fall color is great but finding those days where the color pops without a grey sky sure are hard to find here in the Rockies. So what do you do? I struggle with this question a lot of times because the color of the trees is always so seductive but I know that having any sky will just suck. Even so I have to try and get something out of it. When I came upon this scene I actually wanted to pass it over but Alex stepped in and made it a little more interesting. The big thing that I found really helps in these scenarios is your exposure compensation. It was a dark day so pumping up the exposure comp made a huge difference. Beyond that trying to minimize the amount of sky in the composition also helps.
Image Captured with Nikon D5, 24-70 AF-S, on Lexar UDMA Digital Film