How do I change the background with an event

Hi,

im creating a game, which every 30seconds the controls are flipped. In those 30seconds i wish that the background image has inverted colors, but when the 30seconds are up, the background image becomes normal.

Is there a way in the Events, to switch a background image and replace it with something else?

Sorry for my ignorance, but im new to this program.

You can make a sprite with 2 different frames and animation speed=0.

When flipping controls, change animation frame from 0 to 1, then back to 0.

Or you can apply an effect to the background sprite/layer.