Which looks better?

an really deiced on weather to make it red or make it blue, because the Real life on is only sold in one color aside from a Red/yellow mix model. 

The Red on is more realistic and works better with the skin, and IMO looks a bit better.

The Blue on the other hand is more common to see being used on police cars instead of an all red (color wise, NOT lightbar wise)

Here is a .gif for a rough Idea of how it looks

sorry for bad Gif, capcher software is crap