I'm not good at remembering which breeds come in which varieties, so I looked at the American Poultry Association list to see which ones do exist ;)
https://amerpoultryassn.com/accepted-breeds-varieties/
(Select "Ameraucana" in the breed box, to avoid picking through the hundreds of other options.)
Yes, a Wheaten Ameraucana rooster over a Silver Ameraucana hen will probably work.
I don't know if there are any other silver-based Ameraucana varieties, so that may be your only option for the hen.
For the rooster, Buff or Brown Red might also work. Buff might be too light to easily...