The orange can sometimes be a challenge to
find, as they were not included in very many ensembles.
The vintage open toe heels are called Mules by some collectors, they were made in Japan and came in pairs. The bottom of the left shoe will be marked Japan, the bottom of the right shoe will be unmarked.
Here are the current listings on eBay: (To view the eBay store listings click on "view all
items on eBay" below - a new window will open)