I'm on day 36 and on long MCs I skip the lax tea for a few days at a time. The days I do the lax tea at night I notice that the first part of the butt pee after the SWF is pretty dark brown then getting clear yellowy towards the end.
Even on days without the lax tea at night I find that the first few squirts in the morning after the SWF are still brownish. I imagine that while we sleep the lemon and cayenne are working lossening stuff up and with the tea things either get a little looser or maybe the tea itself to is darkening the butt juice.
We all have diferent levels of toxidity so I would say you are doing just fine.