tan?
Sure, but I think dark blue shirt, black pants and tan jacket work better. or tan pants, light green shirt and black jacket.
brown pants
Jammers are another name for it
kacha
Light brown
smarty pants
Tan,Dun,Buckskin.
Sparkly pants...sparkly pink bow, tan suit pants, tuxedo shoes
A tan color or khaki pants look best in my opinion.
If you are talking about tight, stretching "jean-like" pants, they are called jeggings. (a mix between pants and leggings)
Grey, or black