Yeah, it almost looks like a premultiply issue, but PNG should be non-premultiplied, so... http://imgur.com/6ovIu http://imgur.com/6ovIu Also, the original ha

Yeah, it almost looks like a premultiply issue, but PNG should be non-premultiplied, so... http://imgur.com/6ovIu http://imgur.com/6ovIu Also, the original has values in the RGB channels for pixels with no alpha that aren't visible (due to the alpha) but need to be compressed, so it's not a fair test (although both do to some degree - turquoise area around the bear), so the new one could be compressed even more.