Individual Favicons for different networks

[schildbach]

It would be nice if mainnet, testnet, signet would have individual favicons (currently: individual color) just like the icon on the top of the pages. That way, if you've got multiple browser tabs with the different networks open it's clear from the color which is which.

Less preferred, but alternatively, the page title could contain some prefix like [test] and [sig] for the non-mainnets.

[schildbach]

Thank you so much!