It will take a few days for the cayenne to start doing it's thing and breaking up the old fecal matter. So the first couple days, you were seeing the remnants of meals you had leading up to your start date. Then you saw butt-pee. Had you stayed on for a few more days, you may have started to see other stuff on around day 7 or 8 (at least for me this is what I found).
I would drink the tea and night and do an SWF (Salt-Water-Flush)
in the morning. Most of the time, I would have a BM prior to drinking the SWF. This BM would be dark, loose, SMELLY junk. Then after the SWF, the butt-pee would start out darker and end up bright yellow (old bile) with each consecutive BM.
I don't know about the digestive enzymes. I've done both of my MC's by the book, except for upping my cayenne intake. I worked my way up to 1/4 tsp. of cayenne per glass. I felt I've had good results with the cayenne breaking up fecal matter.
Both of my MC's were 14 days and I never saw any mucoid plaque. The dark liquid BMs were enough for me to know that *something* was being cleaned though!