Note: this is a draft icon rendering for Firefox 3.5, subsequent iterations will be posted every 24 hours or so. Also note that while these drafts appear with numbers and in a chronological order, each draft experiments with a variety of different ideas as we try things out to see what they look like. It’s better not to think of these as a formal sequence, but rather a series of experimentations to explore the overall design space.
Also please note that the tail (with a current flat color) literally hasn’t been painted yet, this is a work in process as we try to define the correct shape for the tail. Once we get that figured out the tail will get detailing with texture, color and lighting.