Help finding a story

Im looking for a story I read on asstr. A man wins the lottery and buys an island. Its a nudist island where all the women must wear colored hair ties decided by their husbands. One color means ‘cannot have sex with me’ and the other means ‘anyone can have sex with me’.

Source: reddit.com/r/Erotica/comments/4voocr/help_finding_a_story