Found this photo recently in my archive. It was taken in September 2008. when visiting Norway. It was still early fall, the trees still had most of the leaves on them.
The blue sky and the sun made the brown orange-brown colours of leaves of the tree come out quite nice. I specifically selected a low vantage point, to emphasise the height of the tree, and the contrast between the orange-brown leaves and the blue sky.
In post, I slightly increased the saturation of orange, to further enhance the contrasts.