Thank you! The purple really does look great - nice job suggesting it, it wasn't something I'd considered until you brought it up!
Ahh you beat me to it with the loading symbol suggestion :). I'm hoping to tweak the first draft animation over the next week for use as a simple loading icon - I'll show off the various options in my second post next week!
Also - very much a need to thank you, your work on that 3D model is fantastic and I can't wait to see how the final coin comes out :). The first print that @dutch did looks great already!