For aesthetic reasons, I'd like to change the apple-touch-icon (the icon that is displayed in the favourites grid in Safari), for a website that I do not own (such as YouTube).
I thought I would be able to do this by editing the html to include
<link rel="apple-touch-icon" href="http://url-to-image.png">, then re-adding the website to my favourites. No luck. Although this did work in Windows to create a custom live tile.
Is there any other way this can be accomplished?