This pretty nice, I actually like the simplicity of it. I just started working with Illustrator again after many years away, and I have to say the program has grown immensely. Are you stacking shapes with gradients here, or was this done with the gradient mesh? I would love to see a screenshot of how this is all put together. I just started plimbing the depth of the gradient mesh myself, and I'm currently finding myself feeling somewhere between overwhelmed and ecstatic about possibilities of this tool.