That would be amazing. I grew up in the 80s/90s. I remember all the hype about the ozone and we as a society were able to change course and solve the problem.
Another thing we need to do as a society is recognize and praise the efforts that are being done to encourage those that are doing it and hopefully encourage more to follow in their steps.
“The orange cornflour we used to create an eye-catching spectacle will soon wash away with the rain..."
Just like the Mona Lisa incident - they aren't doing irreparable harm to the monument. It definitely gets the discussion going, which feels like their ultimate goal.