Reskinning help

I need help, i have reskinned the refugges from half-life 2 using Paint.NET but i want to give the citizens a digital camo skin. is there and way to do that without having to make it my self, mabe like look up a patten on google and then copy and paste. Btw how do you skin? the bold colors dont look right compared to the original model please.


here is the skin i made