In my experience, the coloration of flowers is very dependent on climate. I have one that is a brilliant pink when it is mid-summer..........hot, humid, and sunny. When it blooms in the spring, there is only the faintest of pink showing, and that's along one side. I have a couple that won't have fragrance until it gets hot and muggy. Heck, I can take photos of a flower two days apart and you would swear the photos couldn't possibly be of the same flower.
