I buy Tumbled Tiles from lowe's for about 32 cents each. I stamp on them with Stazon and coat them with a few layers of Krylon Triple Thick Spray from Michaels'. I don't color my tiles, I use nature stamps and/or quotes. I am curious about coloring the tiles, if anyone has the know how to share. Do you color with a blender pen and use Stazon? or do you do something else? I sell mine 4 for $10.oo and they go well.