What a gorgeous flower! The coloring is so delicate it makes the entire flower look light and airy, but it looks really substantial! Really nice!
I too would be concerned over the color break - and it is definitely a color break.
I am not sure that this is always viral though - I am going to post in the Scientific area to see if there aren't other pathogens that cause such breaks.
You might want to hit it with a fungicide just in case. It really is a beauty!
Happy Holidays
Steve
