If you have access to URC Control Room, the Gravity template and my variable-based countdown are there. I also have a very large animated GIF that count down from 5. It eats up a huge amount of memory in the remote, but you can use it without any programming.
I'm a member of the Remote Central community, just like you! My comments here are my own, and in no way express the opinions, policies, or plans of Universal Remote Control, Inc.