pants

Hello, I've searched everywhere, there are guides for making shirts and hairstyles or even hats, but nothing and nobody talks about pants. I have an idea of what I have to do, but, how it works? Help

Hi, sorry for my bad english. Is there a way to dye pants to match some of the suits? I can't match the color. It`s very difficult. Perhaps there is another way? (suits are meaningless without pants, i think) "Brown Suit" on screenshot: