The pants are now textured, and you can see a bunch of the possible options for character customization on these random characters.
There are 2 pants to pick from, and 2 shirts. Both of these contain 2 colour options via sliders, one controlling the main material, and secondary material. (Ex. On a Longsleeve Shirt the Main colour controls the overshirt, while Secondary colour controls the undershirt)
Shirts will also let you pick the pattern.