Reconstructing the wall

The previous version of the wall was a loosely stacked stone wall consisting of sandstone. Because the new incarnation is more tightly fitted, like a giant, HEAVY, jigsaw puzzle, there wasn’t enough stone to re-build the wall as high as it was before. So I had to purchase more stone—what you see in the later photos as the thicker, lighter colored, capstones. These stones were actually foundation stones to a house (demolished?) locally. Examined closely, you can see blue paint (almost the exact same color as our house) on some of the stones. Coincidence?