Here is my pledge:
Here is what 40 tiles with a base coat of gray looks like:
My plan is to paint them similar to my Dwarven Forge tiles on one side and sandstone on the other.
Here are some next to my KS1 pieces. If you have any other specific questions or picture requests, let me know.
The Stones pieces are the same footprint as the KS3 Dwarven Forge pieces (not slightly smaller and inconsistent like the KS1 & 2 stuff).
Dwarven Forgeon left and Stones on right (thinner than DF but close enough footprint that I am very happy I bought these).