Nice game, double jumps are always really fun with platforms in games. A higher visual scale or maybe even just a fullscreen button on itch.io could help with making the graphics a bit more clear. It would also be really cool if the player was actually forced to use the on/off high contrast mode through a slow methodical introduction of the mechanic. I think you have all the stuff here to really make the game very clearly logic oriented with double jumps and contrast switching specifically if tiles can be mapped dynamically to force sections to adhere to alternating patterns. Great job with this, really cool :)