I'm not aware of any differences you'd be able to see in the mane/tail of an amber champagne vs a buckskin, or in the way they'd fade. How about his legs- are they dark black, or are they a little bit lighter (like a chocolate color)? Or his skin- does he have any skin that you'd describe as "pink with abundant freckling"?
If you want to know for certain you could always DNA test him (you're then required to update us when you get the results
If I knew where to send a vial (or whatever sample needed) I just might do that.
His legs are a faded black around the fetlock, but as you move up the cannon bone towards the knee they start to fade to less than chocolate, and on the rears they fade even more going towards the hocks.
Not at all sharply black like I expected.
His skin has no mottles that I can find. Not sheath, arm pits, muzzle, or around eyes. No pink skin except for his white sock and facial markings. However, I will say I don't know the skin color under his random white body spots because I haven't checked.
So, just the green in his eyes is all I have so far and possible red in his black (see below.... I'm trying to "play" genetics here, but don't know the horsie rules yet.
Wow, that horse has THE most Beautiful eyes I have ever seen in my whole life!!..This is what I found..
The cream gene (C Cr ) is an incomplete dominant allele with a distinct dosage effect. The DNA sequence responsible for the cream colors is the cream allele, which is at a specific locus on the MATP gene. Its general effect is to lighten the coat, skin and eye colors. When one copy of the allele is present, it dilutes "red" pigment to yellow or gold, with a stronger effect on the mane and tail, but does not dilute black color to any significant degree. When two copies of the allele are present, both red and black pigments are affected; red hairs still become cream, and black hairs become reddish. A single copy of the allele has minimal impact on eye color, but when two copies are present, a horse will be blue-eyed in addition to a light coat color.
The bolded portion is why I posted mane and tail pics. When I looked around at the amber champagnes/"buckskin" champagnes they all had the red streaks in the manes and tails like Dig does, and I didn't know if it was helpful to post his, so I did.