I've worked on the animation of the lasers a bit to make it more clear to the player when they're going to activate and deactivate.

In the current version of the game (1.0.7), there are only lasers that shoot up, but I've added lasers that go in all directions (for both yellow and red), as you can see in this GIF. These will be included in version 1.0.8.

Just ignore the fact that the orange key doesn't do anything; I forgot to put some orange blockers down by the blue key.