Indeed those are nice pictures. But talking about pictures and the bloom color, I should point out something that I found out last summer. Someone from the Spring Meadows told me that the shrub color is not the same pink "all the time" but that the color matures and changes a little with time. In other words, the plant will have different hues of pink throughout the growing season. I hope that is a good thing.
I am surprised that your previous hydrangea did not make it; they are tough plants. In the northern half of the country, hydrangeas can tolerate more sun, even full sun. As soon as you see the leaves turning ALL yellow, including the leaf veins, consider protecting it or transplanting it elsewhere. At times, sun scorched leaves may turn white-ish as well, bleached by the sun.
Your problem reminded me of a problem I once had. I set up a rinky dinky way to protect a hydrangea from too much sun. Hail from a thunderstorm caused damage to a Crape Myrtle that provided afternoon shade to the hydrangea. The top leaves started turning all yellow and I was forced to do something since it was early July. I put some cardboard , held in place by 4 sticks, to help cast a shadow during the afternoons. Like I said, a real cheapo solution. Had to redo it on windy days but it served its purpose and I removed it by late August or September.