Might scare off a thief if the wheels suddenly lit up when he tried to move it. Ha!
If it's what you want to do, then do it, Pretzelz.
Now, if you used a tilt switch, you think you'd get a on-off-on-off effect? At least at slow speeds? That might actually look cool.
You might need to balance the wheels with wheel weights after installation. Just something to consider.