The orginal idea of me redoing the Ambient panels had been the possibility to add new external classes just like those for the screenbar. For developing and testing I had created this not-so-good-looking clock:

http://www.steamdraw.homepage.t-online.de/DigiClock.lha

For installation just follow included readme.

I might also note that this is just an "as is" piece of SW that might very well stop working with future MorphOS releases since the APIs aren't yet set in stone.