There seem to be a few plants at this time which have both pink and white varieties.
The first pair shown are clover. While I looked at quite a lot of these today I noticed that the pink variety is much sturdier than the white. The white flowers have much more delicate petals.
The dog rose also has distinct colour differences between plants. They can vary from almost white to quite a deep pink.
This pair are only a couple of yards apart on Kings Barn Lane.