Change colour of hats in model viewer

[Haggis]

I figured out how to get different hats onto their respective class in sdk model viewer, but i have a new problem. All the hats by default are red, i can change the colour to blue if i load them as a stand alone model, but i want to load them onto a character. To do this i load a model, say Heavy, blue, but when i load the bandanna model as a weapon (i have to do this to get the hat on the head, unless there is another way of doing this) it is red. How do i change the colour of the hat to match the colour of the model.