Rules: 1. You cannot use the stamp block or any other blocks using pen other than pen down and clear.
2. You cannot change the sprite size or pen size it has to stay default. This includes changing costumes.
3. Only use blocks of code no JavaScript allowed.
4. Share you're project/optimal ideas in this forum page only
5. It has to fill the viewable screen completely.
6. Clones are not allowed
More in depth to the rules of the sprite having to do the work itself: The sprite has to do the filling and the stage cannot be abused. You HAVE to use the pen down block making the fastest printer possible not recoloring the stage. (Why I didn't put the rules so in depth is because I didn't think that they would be loopholed)
This technically abides to the rules. You didn’t say anything about drawing it only with pen
It doesn’t even need pen actually you can just provide the rgba values you want