Here is my Falling Leaves face. https://www.facer.io/watchface/JN3LstoXZK
On even-numbered hours, a leaf falls (non-animated).
Most leaves change color based on battery level (green down to 80%, yellow-green down 60%, orange down to 40%, red down to 20%, brown down to dead battery).
Tree in "night mode" from 6pm - 6am.