Hi, i need a farcry style infrared shader because i tryied to use simple programming an it sucks!

I dont know how exactly its done, but i would think you can make a seperate skin for each model that has the heat signature colors.. then you render the whole thing to a screen alligned quad and apply some kind of processing, like blur/bloom and change the colors to blue and stuff..I dont have any examples offhand but this shouldnt be too difficult