Pretty warm colors for these markers that can decorate porcelain. The principle is simple: writing or drawing upon the porcelain object, left to dry fifteen minutes and baked in the oven 25 minutes at 160 °. You can then wash your artwork in the dishwasher without any problem (it will resist everything, even the Tornado (s) ^^) ... It's very nice to customize mugs for example (kids love!). Very nice to prepare Christmas gifts a little original. (ServaneL.)