MountainWoman - Dianne's little horse is a silver dapple leopard (I think??) and the other one that I know aims for driving silver appies is the woman in Norco, CA. Honey Pot ponies I think... I knew her horses/ her from the Khemosabi (Arabian) son she has that I always admired. I don't know if she still has him or not... But if I keep the daughter of the double bred Khemosabi mare that I have, I'd love to look at breeding back to a Khemo son or grandson... There are several that I really like!
I have a double registered mini/shetland mare that is a heterozygous black/heterozygous silver (really dark w/ a lighter mane/tail) that is 3 this year. I have to send in her for her permanent AMHR papers soon. She MIGHT make a really nice cross on an appy stallion for an appy mini. She was sired by an LWO paint but she is solid and tested LWO -/-. So, unless she's hiding sabino (I don't think they can?), she's solid and I'd love to cross her on a silver dapple appy. I want a prospective driving horse(s) from such a cross, not just a pasture pet or a halter horse - so would look for driving attributes in a cross for her. She's started driving training and she's awesome. Though young, and I'm not a pro trainer, think we might have her ready for country pleasure (or western ctry) driving next spring. I'll see about taking her to some of the NC shows...
Again, your pastures are to "die for". Love them, treasure them yourself! Maybe I'll have a bit more pasture before I meet with my maker...