I have a passion for ceramic test tiles: looking at them, using them for reference and making them. It comes from being a lifelong collector of paint chips, a lover of color theory books and classes, and a plyer of other media before I came to ceramics. I’ve played with paints, watercolors, colored pencils, even with translucent or transparent papers. And while there are color interaction similarities among media, I’m here to testify that the understanding of ceramic surface decorating materials, especially glazes, is in another universe altogether. As usual, I have a few thoughts about that.