I had the most delightful surprise this morning. Yesterday's blooms on the vines on my front porch never closed. I'd noticed late last night that they were still open, but was very surprised to see the same flowers still open this morning! But the color on this one changed from it's normal dark blue to this lovely purple.
This is the color it was yesterday (not the same bloom, but one off the same plant):
I've never had blooms last more than a day before, so this was great fun for me! It must be because it was really overcast and rainy yesterday, but the plants are protected in this location, so the blooms didn't get crushed by the rain.