I love the last picture. great shadows!
I do care about things like these, but don't have my camera with me much of the time. The first three are my favourites. Love water in all forms. :)
When I was little I used to stare at the oil in water that would collect in gutters. I thought the colors were the most beautiful things I'd ever seen. How they swirled. That's what the first photo reminds me of.