More Pony Families Incoming in Season Two

We got to see Twilight Sparkle/Pinkie Pie's parents, but the rest of the mane cast is still a mystery.  Our fanon needs to be blown out of the water!

I think I'm most curious about Rainbow Dash.  How does a pegasus get a rainbow mane?

The screenshot above is from Lauren Fausts DA page.  Thanks to Zack for the heads up.