Cool project, just starting to have a poke around. On Firefox the first impressions are a little skewed because the images are quite blurry. If you simply `apply image-rendering: crisp-edges;` will fix the issue. Before on Firefox  After on Firefox  I'm happy to do a PR, I'd imagine it would be here right? https://github.com/vsmode/pixel8/blob/master/src/components/Stage.js#L235