It seems that the last time the Favicon was updated was last time I brought it up back in 2005. Since then, the typical screen resolutions have increased making the 16x16 icon look dated, and there are now mobile icons, touchbar icons, ect. that can be utilized. It may be time to update it once more. Using the template at
https://realfavicongenerator.net/ I was able to make the following
Example of appearance
Example favicons package zip This is intended as an example since my artwork is lacking, but with an image of at least 260x260 pixels, they can generate a pretty nice Icon package.