Markers for glass-porcelain set of 4 pieces, 31335

The set contains 4 Colours of markers: purple, fuchsia, orange and yellow. In order for the painted object to be washed in a dishwasher, without fading, we need to follow the following procedure: After painting, let the paint dry for 8 hours. Then we place the object in a cold oven and open it at 230 degrees. After 40 minutes we close the oven and leave the object inside with the door closed until it cools down.