A simple subject and an interesting idea. The colors of the subject are rich and nicely saturated.
The composition is a bit dull. Getting lower would help for starters. Moving the hydrant off center would also help. Get a bit closer to give the subject more prominence in the shot or try getting away from the hydrant and relying its color to bring the eye to it.
The background of the picture is distracting. Using a larger aperture would allow you to blur out the background.
This hits the nail on the head for meeting the challenge.