Guess what this represents

We went to lunch at one of our neighbours. Well lubricated three course lunches play havoc with the rest of the.day so little achieved.
Jen, our hostess is a talented painter, I have previously posted a blip of the pencil sketch she did of our house. She has a masters degree in something about painting too so she must be good.
This painting , part of he degree presentation, hangs in her living room along with a few others,  bright spots on the walls of her very old house.
She tells me she was watching a religious ceremony that involved lots of clergy in very colourful robes. At one point there was a long shot showed them from behind and , having no faces, they looked like blocks of bright  colours standing randomly waiting. This is what she painted .
I have not got a degree in art, I just like it because of the bright colours and straight lines