the man between the trucks, the less colorful one, is the important piece in this photo. I get the feeling that somehow everything's has been staged for this figure, and as colorful as the picture is, precisely because of this figure, I'm pretty sure the photo would work equally well in B&W.
On the other hand, all the color makes the place look like an amusement park. Funny, when one considers that gas filling is one of the most boring things in life.