I have a fear of blushing too. I am a pale, blonde haired female so I feel that when I do blush it is really noticeable. The thing is with me, I don't think I do blush that much at all. Granted I don't put myself in too many situations that would spike this type of anxiety.
It's not really about the blushing itself anyway right?? It is just the fear of it. It's about what people are thinking about you. I worry that if I blush, people will think I am some kind of weirdo. But I know if another person blushes (which people do a lot) I think "hmmm, they do the same thing as I do". I don't think of them as strange or weird. It is just a natural phenomenon that happens during communication with others sometimes. So I guess it is up to us to be more gentle with ourselves and to try be kinder and more rational with this fear of blushing.
Not sure if this makes you feel better but I just wanted to let you know you are not the only one who worries about turning red. I am hopeful this program will help me see that I (and you!) are wonderful, valuable people that can overcome our anxieties!