Its just like any other dog, but with excotic unnatural colors. Just color in any drawing/lineart/blank render, and there you have it.
BUT they're against the rules on this site. Don't think that you can make a character sparkedog and expect it to be activated.

these wolves ar AGAINST the rules, so don't try to make or find one. In case a sparkle dog has colors not found on a wolf , pink, blue, purple, green, ect... So you won't find one on teh site, or at least shouldn't. Or they are just unatrual. So you can't find them here on balto. You can find them on deviant art

spàrkle dogs can't be matched to balto fanart, i mean for example... a pink emo wolf can't be matched to a balto fan characters that they MUST be related to balto not only in story, in style... background.... and a pink emo wolf can't be related to balto

Or wings, or they have superpowers basically a marysue of the canine world

These characters are NOT allowed. They're like any other character. They just have unnatural colors. And it's sparkle dog, not wolf.