Pink or blue?

After an exhausting day yesterday I have been pleased to be at home. 
Did a quick bit of shopping before 9.30 and had a friend come over for lunch and to watch some tennis.
Women’s final was quite difficult to watch as so one sided. But great we have British men’s doubles champions..the last time was 1936.

A quick walk in the neighbourhood and I saw this large hydrangea which has flowers of a whole range of colours. All the others in the area are pink so aim wondering if the owners have tried to make the soil more acidic to get blue flowers?

Not quite so hot as yesterday and there is a nice breeze too.