Just gonna throw in my two cents -
If it has white soles, white skin, and slate/black/pale blueish white legs, beard/muffs, pea comb, and a body somewhat or well fitting to the SOP and lays blue or blue-green eggs, I think it's perfectly fine to call it an Ameraucana. Whatever color it comes in. After all, there are indeed "Ameraucanas" perfectly showable with non-recognized colors. Splash, Lavender Wheaten, Lavender, Splash Wheaten, Mottled, Blue Mottled, Blue Silver . . . .
Consider that any other breed is also showable as an "AOV" color as long as the rest entirely fits the breed description.
So of course, that leaves out the commonly confused EE's with
green or yellow legs,
yellow soles, yellow skin, gamey type bodies,
green or brown/pink eggs, very white or blue earlobes, single or other type combs, etc.
It's the same with any other breed. If it has characteristics that seriously deviate or disqualify it from the original Standard of Perfection for the breed, what's the point in calling it that breed? Especially when you look at other breeds with breeds somewhat similar to them, the same thing would be said. If I had a Production Red (hatchery RIR) I'd still call it by breed, an RIR, but if it were an orangey color or really did look refined in type, or had excess black in the neck, or white in the earlobes, or white in the tail, or wrong color shanks, etc - I wouldn't call it such. Because chances are it is a mutt or a New Hampshire or something else.
Now, some Ameraucanas do have some faults that are seriously questionable such as green eggs or lack of beard/muffs but as long as you know the rest all fits the standard and its parents were both fitting Ameraucanas, I'd say it is still fine but your bird does either
A) need to be a pet for bred for other purposes than an Ameraucana or
B) food.
My two cents.