Start watching around August or so, when the autumn clothes begin to appear. You can find oxblood shoes at a good shoe store most times of the year. Cheaper places may or may not have it.

And it took a while for me to think of this, but you can also buy oxblood yarn! With which to make a sweater, vest, scarf, or whatever you wish.

http://www.lmrknittery.com/module/search_content.htm?form_version=2&showSearchResults=1&search_keyword=oxblood&image.x=0&image.y=0