kind of late reply, sorry!
If you're still trying to put this together:
a lot of halloween costume stores sell thigh-high and knee high white boots, and then for the gold parts you could find some colored duct tape.
If you would rather just purchase the cosplay boots, here's a link to some on ebay! http://www.ebay.com/itm/Code-Geass-L...em27c22a 3e32
hope that helps ^^