Neat! I'm not too fond of the color of stone you used, but some localities insist on "Earth Tone" colors.
I also like the ability to adjust the verticality (is that a word?) with those bolts. I would suggest they have a lock washer and nut to prevent any mechanically inclined (no pun intended, of course) squirrel from making "adjustments". Better safe than sorry!
A church I used to go to decided to build a couple of baseball diamonds. The city said fine. After they were built and fenced, the city said, "We don't like the (galvanized) metal posts, chain-link fencing and backstop. They can be seen (through the young evergreen trees) from the street. Paint them black or an earth tone color."
After the painting was done, I told the contractor, who was a friend, that the city was not pleased that he did not use a flat style paint! I suggested he sandpaper over all the surfaces... I had no idea he had such high blood pressure!