Not sure about same for Escorts(new term), however, the Roman Empire had a way of IDing prostitutes in their society by mandating that if the ladies wanted to be/were prostitutes, they had to have their hair dyed blonde. WHY? Roman ladies had naturally black hair. Natural blondes, in Roman times, were barbarians, specifically the Gauls, therefore, prostitutes could not be associated with the dignity of a proper Roman woman, they had to make themselves look like barbarians, i.e. Blonde Hair!
AH! The good ole days

) LOL, Guess this was their "Internet

)" they could see what they were getting into, before she showed up at their door, not looking anything like her pics---we all know the perils(not exactly 100%, but sometimes, EEK!) of a certain site

( I lick, oops! dang spell ck! LIKE! all colors of hair, all flavors of that soft skin;P~~~~ Got to put in some work hrs now to get that color all the ladies like---GREEN

)