It appears the artist has painted the barrels as well or is that a coincidence?
In any case - the colors match well and give the photograph an interesting coherence.
So the photograph becomes an interesting presentation of the graffitti.
I wonder if experimenting with the point of view could have made it even stronger -
But I guess you couldn't add more from the barrels and that little plants?
They look a little chopped off, thats why I'm asking.
A hand grabbing out of the barrel would ... well ... its your image ...
Cheers
~Chris