After reading your comments, and looking at the flowers again today, I realize I didn't do a very good job of photographing this plant/flowers. So I tried again:
I'm still not sure I have the color quite right. One of the disadvantages of greenhouse growing, and photographing there, is color memory. When my plants were in my house, I could bring the flower to my computer to check for accurate color. Having the plants in a detached greenhouse makes that more problematic.