Oh nice, I gotta learn how to do that with the palette swapping with color constants! (I also use Godot btw) But the graphics are still pleasing, the palette is more of an extra polish thing you could add!
Viewing post in Tetromino Barge Company jam comments
For reference, all I did was use a grayscale image in a Sprite, then set the 'modulate' property to one of these colors: https://docs.godotengine.org/en/stable/classes/class_color.html
Very useful for prototyping.