idea for making a gate? Fence idea: woven withe uprights over three lumber cross-beams with periodic posts for stability; great if you have access to that many similar-sized branches (contact an arborist?
Cobalt and navy look good against gray stone. If walls are whitewashed too, dark blue or light blue washes are a standout. However if interior stone is exposed, and is more sand/orange/green, other colors would be appropriate.