Thanks for sharing. I really like the motorbike, and the transparent angel wings works very well for so few colors.The site flat2d that hosts translation of japanese pixel programs has put online an archive of similar images for study, but as a big archive (page here). Hosted images are much easier to study, you can for example pass them to the PJ specs tool for zooming and analyzing colors :http://wouterpleizier.nl/pj/index.php?input=https%3A%2F%2Fi.imgur.com%2FUxSVMLN.png