I am curious about it, I have so many plants that have PBF, I really didn't think a whole lot about it before it mainly catches my eye in early spring as they start to grow most are darker colors or bright pinks but as I was cleaning up foliage in my seedlings noticed one of crosses had some plants with it (Decadence X Star Appeal ) I got 9 plants and 2 of those have bright PBF so it made me wonder what in the plant brings it out and when hybridizing with a plant with PBF how often will it pass on that trait to the kids ??
I think the plant with the most PBF I have is (Magnificent Masterpiece) I don't think I have any pictures of it from early spring but will check tomorrow but it really stands out and where most stop a inch or so up the plant with color it extends quite a bit further beautiful when it first starts to grow.