My bushes range from white to deep raspberry to lime green trimmed in dark pink,I have notice most flowers are fading then you have a late bloomer. I to ,have many colors around my house. When the bush is purchased it is done so by a color that interest me. Then the key is to feed the bush what it needs to stay the true color for which it was purchased. Feeding around the drip line.My cone white has the most unbelievably large flowers.You can Google these plants and see what each needs to bloom there true color.

My grandmother lived in Houston and she had a lot of these in pink. When she got a new roof some nails fell into that flowerbed and she had blue ones mixed in the pink. It is an especially good year for Hydrangeas here. It has been rainy and rain water is their friend!

That blossom must be the 'black sheep' of the bush.

At my house in Maryland I had one that had blue and purple on it. It was given to me by a friend who sent a cutting in a plastic bag through the mail. It came in October so I planted it and put a glass jar over it to protect it through the winter. It was beautiful and I was sorry to leave it when I came to NC.

I'm wondering if they previously treated the soil and there was just a bit left?
Watson, your photo is beautiful!!

i remember when i was just a small child, about 5-6, my grandpa wuld grind up bricks and fabric softener to put under the bushes. the colors were very intense. a great memory, thanks.