Slide Color in progress

Currently, I am making a small game, with TIC-80, which is a clone-game for slider game. The twist over here is you need to rearrange the block based on its colors. Players can choose those base colors for each corner and the game will generate other colors. Because TIC-80 only support 16 different colors, I can only make it 3×3 grid. I still consider making it 4×4 and using all 16 available colors.

Right now, the menu for the player to choose the base colors is already done. But the core gameplay is still in progress.