I liked the image. You shouldn't have to pick colors. Just enlarge the image until you're sure you have more than enough background. Then use the Trim command and it will take care of it. Then send it to ImageReady and Save Optimized as and you'll have a nice GIF. It's the easiest way I've found to make GIFs. I used to use Picture publisher, but I could never get rid of halo's around the image. It's a nice editor otherwise and much easier to use than photoshop. In fact, I used it for almost all my images except for the logos and some of the gifs.