I have been looking into the Cursillo Movement for my own curiosity. I have not attended one of these retreats but have just researched a bit on them. To me it sounds a bit “liberal”. One of those things that can begin as a very good thing, but at the same time, be very easily spun to confuse. When ever I see the “rainbow colors” I become concerned. This sounds like it was something great in the beginning, but as it has become widespread throughout the years, it has been manipulated to be something else. Something “diverse”. Taking the true meaning of Catholicism to another perspective. Steering people away from the sacredness of it all, and directing them towards a more liberal, perhaps protestant style of worship.
This is my own opinion/observance. A huge red flag goes up after what I have researched.