Yes, time will tell.
I didn't know it was possible to have pink blooms on some stems and blue blooms on other stems of the same plant. Interesting. I suppose, maybe, that the roots that fed the blue bloom stems were in acid enough soil, while those that fed the pink bloom stems were not. It is a common phenomenon that certain roots feed certain branches in woody plants (trees and shrubs). Hydrangeas are somewhat woody.
Maybe....
