Shetlands don't have the champagne gene, but it can be graded in - though then they'll always be Grade Shetlands. Takes a while to do, and they won't be enterable in halter shows. Perfectly usable for game or campaign crosses, though, without causing them to be “grade”. Also, a project I as a champagne enjoyer am 100% happy to encourage.

It's very possible. I've popped her up for brood if you're interested in trying for a foal. Not high leveled but does have spots as well. 

https://horsefable.com/horse/1816602

Thank you so much everyone! I breed Amber Champagne in Mustangs and Irish Cobs so I thought it could be cool to tho that with my other breed Shetlands. @Brumby I will definitely be breeding with your horse. Thank you all so much for your help!

As a side note if I were to use a Mustang or Irish Cob that is Amber Champagne and crossbreed with a Shetland is there a certain color Shetland that will carry the genes best? 

A bay would help as it's the agouti making them amber. Otherwise a buckskin and hope the cream doesn't pass if you don't want the amber cream color. 

You could use a pony of America's to make it faster if there's any up for stud with the champagne gene. It's a 50% Shetland cross so you'd be a step closer than with an Irish or mustang. But I don't think there's many around.

I've put any PoAs I have with champagne up for stud. If they're frozen wait an hour and try again. Just means I'm not letting them age up at game roll over time. 

Thank you so much!