The only reason I say she isn't a double cream dilute and there's no chance of it is her skin is gray. Yes, she has some pink, but under no circumstance will a double dilute have any trace of gray skin.
She might lose the black points as she gets older, too. I'd wait for color tests to come back before registering her, though I don't know that any registry would listen to what their actual color is.
She's a red dun. And the only black points she has are her tail. If that fades, we're ok with that. She won't lose her factor. I can garauntee that. Ace has yet to throw a solid baby. Always a variation of a dun.
We will color test. But I never thought she was much more than a red dun. And her eyes being grey, in horses, equals an amber eye. Which isn't uncommon at all.
Actually horse registries care very much about color. More than most animal registries. Certain associations refuse certain colors (Jockey Club, TWHBEA etc). AQHA isn't the best at keeping up on color. They only care about excessive white markings (which would warrant an APHA or pinto registration).
As for her skin, it's a black skin. No pink.