Thanks for playing, I've added a new difficulty mode selection to this with the update from today! The old difficulty is now hard mode, with a newer easier timer for easy mode!
In the options menu in game there is a section called Video, go there and click on "Classic" to change it to "Emulated". That should remove 99% of the effects.
I was just looking into it today, and even though I don't list it on the games page or in game for the controls yet, you should actually be able to control movement/rotation with Arrows Keys just like WASD!
Sorry about that issue! I've updated the game to change the hints and be explicitly clear about the colors through text wherever relevant for that puzzle. I hope that helps and makes it playable for you now!