I like this.. despite its blurry nature. I really dig the creeping color intruding or leaving the black. Unfortunately there's no bubbles that I can see so I can't see how it works for the challenge. It is possible that the streaks are ON a bubble, but due to the super soft focus I can't really tell what it is. I gave a 3, but had a bubble clearly been present and envisionable I probably would've given a 6 for the simplistic elegence (assuming the focus was good). 3.
I don't doubt that it's a bubble. It's just so abstract, and dark that it doesn't do a whole lot for me. It's an interesting technique, though; and I'm thinking you could do some really cool stuff with this idea. Also, you can make your entries bigger. Wasn't sure if you knew that. Don't give up...I'm thinking it will do better than mine!
unless this is a macro of a bubble and your getting a shot of the clolr streaks in it.. it does not fit the challange. Also the color is not that vivid or focused