Photo ID is a tricky business, but if blind voting counts, I agree that your plant looks more like 'Blue Mist' from the pictures posted on HMF. I grow 'Yesterday.' During the spring flush, the blooms are held aloft quite a bit higher than your shot reveals. I've never see the color that light, although color is generally very saturated in my cool climate.

Take a look at the leaf margins on the several photos posted on HMF. 'Yesterday' has less pronounced serration. It also tiny but distinct fringed stipules. I don't know the parentage of 'Blue Mist,' so it's possible you might see fringed stipules there, too. If you check your plant for prickles and stipules, I can compare your findings to my 'Yesterday.'