My cast iron pan is new, clearly black, like deeply black. In the instructions, it is mentioned that it can be put in a dishwasher (not recommended, but it could be). The first time putting it in the dishwasher, it was really catastrophic, rust everywhere, like it was covered with rust powder.
I washed it manually (using vinegar and bicarbonate powder) and re-seasoned it. But the color of the pan clearly changed to a slight gold (or maybe slight red), not really black as before.
What happened? Any way to restore the original color?