Erin McKeown gets gunged with paint in the music video to her song "Proof". The gunging is played in reverse.
Simple scene, no fancy choreography, but the mess is great.

The video itself: https://www.youtube.com/watch?v=jx5qSJOWdyg

Behind the scenes: https://www.youtube.com/watch?v=9FT2fboq2Io

You're doing some great work finding all these videos - thank you!

You're welcome