11oz ceramic color changing mug - TOTAL SEED OIL DEATH!I HATE THE SEED OILS! I HATE THE SEED OILS! Of all these mug types, this one is my favorite. These 11oz mugs are black when cold and turn white when hot. HOWEVER: each time you put it in the dishwasher, you should expect a little speck of the film to disappear. This is the only product I'm selling that actively degrades, but it's so enjoyable to use that I genuinely think it's worth buying. I've used mine a bunch for a few months and it's probably got