The first Master-Cleanse I did I got ropes. It seems that the P&B shakes do it. The first one was about a foot and then a had a few other shorter ones. I think (can't remember for sure) that I had ropes from day 4 through 10. They are strange! They become annoying because they don't break off--they just keep coming little by little. I sat on the toilet for a long time with the first one. lol!
I am on day 2 of my second Master-Cleanse and have yet to see any ropes. I did 3 P&B shakes today--yesterday I did not do any--so I expect that I may see some tomorrow.
Mine are dark but not exactly black. I should inspect them better this next time around--they are quite interesting. Someone posted a while back that a copper penny came through in their rope. Can't imagine!
nik