Please don't laugh, this may sound like a silly question, but I want to cover all my bases.

Can soil PH change a Pink Brug into a Yellow one? Kind of like how you can play with Hydrangea colors.

Okay, the reason I am asking. I traded somebody some plants for a "Pink" Brug. I have a few Yellow ones that have gotten pretty big and flower for me on a regular basis. I wanted to start getting into some other colors, Pink is my wife's favorite color, so it was an obvious choice. We waited all Spring, through most of the Summer for it to get big enough. It finally started to bud.....wait for it.....Yellow! I asked three other people what color it was, in case I had gone color blind or something.....Nope, Yellow. So, back to my original question, can PH change the color that much or did I get shafted?

Thanks All!

Darren