Shadey Hills Sunshine is a 2022 palomino tobiano daughter of chestnut tobiano Don Leonard Stud II and palomino tobiano Little Miss Sunshine. Both of her parents still live on Assateague. Thanks to Deb Shade for sharing her results!

Sunshine is a palomino which is a chestnut with one copy of the cream dilution. Her test reflected that with e/e (red) and CR/n (cream). 
https://www.thecolorfulchincoteague.com/palomino.html

She has one copy of agouti. It's hidden since she doesn't have any black. Looking at her pedigree it likely came from her sire as he has sired bays out of blacks, and his dam was a bay.
https://www.thecolorfulchincoteague.com/bay.html

Both of her parents are tobiano pintos and so is she. Sunshine only inherited it from one parent as she has one copy.
https://www.thecolorfulchincoteague.com/tobiano.html

Sunshine's primitive markings test showed nd1/nd2. That means she could or could not have primitive markings.
https://www.thecolorfulchincoteague.com/primitivemarkings.html

Effie's Papa Bear, better known as Hoppy, is a 2007 solid bay stallion on Assateague. He's sired by the bay tobiano half Arabian Sockett to Me and his bay dam Mermaid was an Assateague born full Mustang. So he's half Mustang and 1/4 Arabian, something I find pretty cool! Arabian and Mustang are the two breeds that have been most often crossed into the Chincoteague Pony. I was at Pony Penning the year he was born and he was one of a group of colts that were the first boys kept for the herd in 11 years.
https://www.thecolorfulchincoteague.com/arabian.html
https://www.thecolorfulchincoteague.com/mustang.html

As a bay Hoppy has black and agouti. Agouti tells his black to stay on his legs and mane/tail. It appears that he's homozygous for agouti. I think this because he's sired many foals but no black foals. With as many foals as he's sired he should have by now if he didn't have two copies of agouti. A black pony can't have agouti. Both of his parents passed a copy of agouti on to him, and now he passes a copy on to all of his foals.
https://www.thecolorfulchincoteague.com/bay.html

Hoppy has sired several chestnut foals so that means he has a copy of recessive chestnut. Both of his parents carried recessive chestnut so it could have come from either of them. His sire's sire was a chestnut and his dam produced a couple of chestnut foals so that's how we know they had it.
https://www.thecolorfulchincoteague.com/chestnut.html

His sire was a tobiano pinto but Hoppy didn't inherit it. Tobiano is one where you either have it or you don't. Any tobiano foals Hoppy has sired the tobiano has come from the foal's dam.
https://www.thecolorfulchincoteague.com/tobiano.html

Mayflower Maiden was born sometime around 1980. The first photo by Deb Noll is from 1982.  She can be distinguished from other palominos by her star. Her identification number was A2 or A02 and she may have also been called Mayflower Madame. Her parents are unknown. She has no known descendants in the current herd, but she might have some that are unknown considering her long life. She died in 2003. Her last foal is with her in the 2002 photo by Kelly Lidard. That filly was sired by Miracle Man and is the maternal granddam of Misty's Double Platinum, aka Winter, who briefly lived on Assateague.

Mayflower Maiden was a palomino so at least one of her parents had to have had the cream dilution. A palomino is a chestnut with the cream dilution. She would have passed cream along to statistically 50% of her foals. And she would have passed chestnut on to all of them. Two of her known foals were chestnut. Her last foal was a buckskin tobiano sired by a bay tobiano so she passed her cream on to her, along with chestnut recessively.
https://www.thecolorfulchincoteague.com/palomino.html

She was on the lighter colored end of palominos. This difference in color shade likely has a genetic component. It's something that's currently being studied.
https://www.thecolorfulchincoteague.com/colorshade.html