Oooohhh! I really love this. It's like the image starts in B&W and move into technicolor at the back. There's rythm in the marbles, rythm in the no-color-to-color... 8 for me!
What a great photo. Can see you!! But I dont think that take away from the photo. I like the repeated silver, even if its only a twinkle in the background. The colors are lovely and keep it interesting.
I don't get a real sense of rhythm from this shot, but then again I do get a sense of atonal melody. There's no well defined paattern, but there are many contrasts in shape and color which do have a (somewhat jarring) effect.