Heh, awesome. We need more large gifs. I had sworn the static cap was on here (was going to make this the parent) but after a couple sweeps through kamio_misuzu I couldn't find it. Probably overlooked it. but I thought it even had comments saying "This should be a .gif!"
The GIF89a standard, will produce an animation that ends with a 24-bit RGB truecolor image.
A GIF can be encoded to render as a series of overlapping full-screen images, each image filling in color that wasn't in the previous one. Transparent pixels can be used to preserve colors from previous images.
A similar method that doesn't use transparency is to encode the GIF to render as a series of less-than-full-screen images adjacent to each other, rather than overlapping.
These methods are not widely supported by GIF-generating software, Web browsers and other image viewers, so their ability to display such GIFs accurately may be limited.