Thunder River said:
She's not champagne. Her skin isn't mottled, her eyes aren't hazel, and her mane/tail are not brown.

She's not dun. No leg barring or dorsal stripe.

She could be sooty palomino, but I actually suspect she could possibly be buckskin. That would explain the darker topline, dark ear tips, and darker legs than would normally be seen in a palomino. It would obviously also explain the black hairs in the mane and tail. Genetic testing would be necessary though.

Interestingly nobody has addressed the pattern here. The sire appears to be typical frame (overo) but the dam is definitely not. Her highly mottled pattern, extending from her legs, rules out frame, since frame rarely causes white legs and typically has more well-defined edges. Some people call it "sabino overo" but that isn't accurate since dominant white (depending on who you ask, this may include sabino) and frame are not at the same locus (gene). The other foals from that mare also appear to be dominant white/sabino, possibly in addition to frame, but genetic testing would be needed to tell what variant of dominant white. Note that OP's foal and the past foals of the dam have pointed, tall stockings with well-defined edges--this suggests at least sabino, possibly another form of dominant white.

Example dominant white (W5). This is Simba Twist by Sato, bred by Blazing Colours Farm.

http://www.blazingcoloursfarm.com/simbajump5web.jpg

Cappuccino said:
Yeah she Palomino but the looks of it. If she got the E/At gene from dad and dilute from mom she'd be buckskin but no black mane and tail. Looks palomino....3 palominos I know were born bright chestnut and the foal coat shed to palomino.

There's a university who gene tests. I can't remember where. We've had a lot of our KNNs and appys done. Just pull a few mane hairs (making sure you have the base of the hair) and send it off.