Snapshot?
*ugh*
There is a lot of interesting things going on in the composition. As mishelle pointed out, The dark half round shapes running up the ladder, which is a nice strong line, takes you to a similar shape in his sunglasses, the arcs of the lighting take you to the lights which repeat that similar shape (and they are all dark). The lights facing in point you right back to that strong line. This all frames the painter. The strong angle of the ladder and the circular eye path I mention, give me a sense of uneasyness, which I would have on that ladder.
I don't understand comments about what he is holding. Not being a type form (paint pail) urges the viewer to look more closely. It's also not like she set this scene up, and it was in her control.
As for the desaturation or possible selective color, for me, it wasn't so intrusive, and frankly I looked past it at first.
I think this is a well done street shot, and has far better composition than most I see.