When I get round to it, I'm gonna rip off Bobo's sig and make a better one.
As for the red glow, I wanted a red scanner light like in knight rider but got blasted. Ditto for painting the red stripe lime green. I do think a 'blue' glow would go well behind the badge.
What would be better is to use a multi-coloured led that you can adjust from inside the car to difference colours, so when the police pull you over, you can change the colour (or turn it off).