Running the title through Google Translate outputs this:

I can't turn off some green, orange and red squares above the blocks

It's some of F buttons. Maybe F6 - F7 - F8 i can't remember which one.

It's caused by a mod which adds the Lighty Mode, which is responsible for the overlay. Use F7 to bring up the Lighty Mode menu, and F8 to toggle the overlay.

james got ya