not really as they are the same color and almost the same shape as the other ones
trust me mixing them up aint a good thing if your pissed,,,,,,, and at the same time being horny when your back is in agony aint much fun either
btw ill send that letter this week mate,,, been busy at the gym,,,, yes i STILL go 4 times a week even though im i pain,,, ice packs and pain killers is what a REAL man needs,,,,,,,
well that and go to a poncey fitness gym with a sauna and spa so you do 10 mins work out and 2 hours in the spa to relax is a bonus