Wonderful little game. Would enjoy this being extended even :)
If you don't mind sharing, how did you create the coloring effect? Is it a custom shader?
Viewing post in Muldeun jam comments
Yes, a fairly simple custom shader. A full-screen ColorRect on a CanvasLayer above the background draws both the gray and the colored areas. An autoload script keeps a low-res mask of the whole world that records what's been colored (by the wand, the stone lanterns, restored areas), uploads it as a texture every frame, and the shader samples it at each pixel's world position.