It will brighten the place up a bit. If we all did this though some might get the message.
Our City has different days for different parts so the message would be for five days a week.
We have electronic signs that show your speed and some drivers think it is clever to get a high score. I was walking near the sign the other day and it registered 43. The speed limit is 30!
It is a pity the sign is not a speed camera as well.