Open cheat engine, Or your preferred memory scanner.
Select the class you want to change the camo on. Then goto cheat engine and for scan type, Select "Unknown initial Value" and then press first scan. Then change the camo on said class. And scan for "Changed Value". Do that until there are only a few offsets displayed. And if you do it correct one of them offsets should be the offset you're looking for. To check, Just go though them and change them individually, When when you change a offset value and the camo has changed with the offset, You'll know you have to correct address. Once you find that offset, Go through all the camos. So go one, Two, Three, Untill you get the camo you're looking for.
Hope I have helped.
//Solved.