Nothing can obstruct any part of the plate that needs to be read. Can't cover the letters/numbers, the state name, or the expiration stickers. Nothing in the code states it only has to be clearly visible from directly behind. Just that nothing can obstruct any of the information. And the law lists a bunch of stuff then states, "or any other covering" which includes the spray.
You're out of luck since the whole point of those special plate covers and sprays is to make the plate not clearly visible to the camera.
Pittsburgh Pirates- 1st place NL Central 7/15/11
They've got us surrounded? Good. Now we can fire in any direction, those bastards wont get away this time
An amateur will train until they get it right. A professional will train until they can't get it wrong.