I've spent a bit of time designing a simplistic (but state-dynamic / rendered on the fly) svg favicon for a firefox extension I'm working on. I started designin

I've spent a bit of time designing a simplistic (but state-dynamic / rendered on the fly) svg favicon for a firefox extension I'm working on. I started designing at 512², with dimensions/elements carefully calculated for downscale, but the resulting antialias on various screens was so unpredictable that I switched to designing a 16² upscale instead which, while initially restrictive, was much more predictable and came out looking quite nice.