the blue, pink ones? Hydrangea.
Did you see my post today?
With the Blue Hydrangea
If you add something to make the soil acidic, the flowers come Blue. Add something to make the soil alkaline, and the flowers are pink.

Our clematis is about 10 feet tall.
Its planted next to the back stairs porch, and climbs trellis up the side of the porch! Last I checked, it was climbing into a hanging pot of strawberries by our back door.