Comment 8 for bug 1693155

The good news: I have a proof of concept fix attached. Just made sure all the icons have invisible square borders, and all are 24x24.

The bad news (1): A more modern directory layout for our icon theme would be required to use these. Just putting them in the 24/ directory is not enough. You have to put them in 16/ and 22/ too, which is obviously wrong because they are actually 24x24.

The bad news (2): Adwaita's default battery icon looks much better than even the fixed Ubuntu mono one. Because Gnome Shell shrinks the icons too much to make out details in Ubuntu's long narrow battery icon. Adwaita's is more "readable".

The bad news (3): Nobody noticed that even with Ubuntu-mono-dark icons, Gnome Shell is still using the Adwaita icons for other things like wifi. It's failing to pick up the Ubuntu wifi icons and others. So we really need to address the entire icon them as a whole...

In the meantime I suggest we should find an elegant way to just use the Adwaita shell icons (as we already are for non-battery icons). Because using the "fix" attached here still doesn't look as nice as Adwaita battery icons.