Help with Labyrinth game

Hi

I've put together the start of a real simple labyrinth game but I need the screen to flash when the player "moves" like in the Wizardry NES Game so that a long passageway of the same doesn't look like the game is doing nothing. I've tried using an active object that animates flashing black but if you press the button too often it just stops animating. Any help or ideas would be great. Thanks.

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so that a long passageway of the same doesn't look like the game is doing nothing.
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Usually the use of alternating color on the wall or floor or random flags or a torch or various different objects indicate change/movement.

The classic is telegraph poles on the roadside moving toward the player to create a sense of a speeding car moving away.