I spent way too long on this LOL
At first I didn't really want any of the kids to have rainbow manes because it seemed too blatant (yknow, when people create next gen ocs that look like the parents' traits just randomly pieced together instead of a whole new individual more than the sum of their parents) but then I thought it would be such a dang pity if Dash's mane didn't get passed down somehow (´Д` )