Hello @velimir for me it became customary to comment daily and support your intervention :)
The fence has a rich green color and stands out even against the background of the red part of the wall (in my opinion most often the red color is more pronounced in the photos and attracts more attention). Thanks to the game of shadows and the saturation of green color, the impression of the volume of the fence is created. This is especially expressed in the left part of the fence, which is not covered by an additional shadow. A good way to get attention.
Goodnight:)