Shades of Clay to Come?
Based on the fact that they have the same (or very similar) names to discontinued Studio by Sculpey colors, I'm guessing these are similar to what a few of the new Premo colors will look like.
Pictured are the following discontinued Studio by Sculpey colors, starting at top left and going clockwise (except where noted, the old Studio color name and the new Premo color name are the same):
Sunny Side Up (the new Premo color is named Sunshine -- so this one's a bit of a guess)
Also pictured are Granitex colors: Granitex Blue and Granitex Black. I'm guessing these are going to be similar to the new Premo Accents colors Blue Granite and Gray Granite.