Above are pictures of my color tests. These tests are made of low fire porcelain and mason stains. They are fired to Cone 05 with a 20 minute hold. They are fully vitrified and some (depending on the amount of flux in the mason stain) are self glazing. The low fire porcelain recipe was developed by Andrew Snyder. I highly recommend checking out his research! If you are interested in the color recipes, send me an email and I will forward you the document.