Nice job, SW! Thanks for sharing!
I haven't seen any barefoot klickies with ragged shorts. Don't recall ever seeing any brown shorts either.
However, ragged trousers do exist in the Pirate theme.
Most of the shorts-wearing figures I've seen with the pale skin colour have blue, red, or white shorts. They're usually found in sets from the Leisure theme. I think there is also a female figure in a recent dollshouse set with purple shorts.
None of those sound like they would work very well on your Spartacus figure - unless you want to try your hand at some painting.