Silver Colors and her colt have been placed with Wicked Mizz and her bay filly by Tapizar. The broodmare manager at Gainesway Farm likes to buddy mares up, 2-3 at a time to let them get safely accustomed to being back with their own pasture mates with their babies. In the next month or so, he will then place most of them back together in a larger herd, and since the mares will have a horse they are comfortable being around, there will be less of a chance of a horse getting injured.
As far as little Silver Colors19 turning gray...He will probably stay chestnut. It can be hard to tell, but most of the time the babies that will turn gray usually have what I call a thick "white eye-liner" around their eyes. Kind of a roaning around them. They will, after about a month or so, have a roan/steel look about their entire coat. Silver Colors19 had a little lite coloring around his eyes when he was younger, but that was due to his chestnut color.
Here is a recent video of Silver Colors19 socializing with his friend.