I split your post off to it's own thread since it was unrelated to the ID question from the OP from 2012.
Those are called Bar or Accent Colors (you will see them listed in the database if applicable) and many clematis have them and they can vary in intensity depending on weather or culture.
For instance, my Ristimagi has pink bars
So yours is a lavender pink bloom with blue or violet bars and cream/white anthers. Doesn't look familiar to me, I'll check a bit through the database and see if anything resembles it.