As is common with such "practices" it started as a simple thing, a green handkerchief indicating your orientation and depending on which back pocket, you said whether you preferred being the bottom (receiver) or the top.

It seemed to spread, a black handkerchief indicating you were open to rough play.

But all the colors? Nonsense, created by people who thought to elaborate on the code because, if simple is good, complex must be better? LOL

Really? Who in their right mind would use a code that you'd need a cheat-sheet to decypher?

Excuuuuse me but you've totally misread my message.
This is a red and yellow, diagonally striped handkerchief with green piping and a BROWN houndstooth border in my RIGHT pocket.
RME's what a cretin!!