I'm working in doing a map for a 2D game. The image is saved to PNG and loaded by the game. However, the game detects true black (HEX #000000) as background, and makes it transparent in-game. Since I'm adding custom pictures to the map, some of them have this black color, which I would like to replace those pixels with anything just above true black, like HEX #000001.
If this modification is possible to do with a certain image or selection, instead of at the end when saving the whole file, that would be appreciated.
File will be saved as RGB, PNG-8