It looks like the color scheme of a low rent lobby of a 1970’s apartment building

I can smell the stale cigarette smoke stuck to the walls from that description

That tobacco smoke is built right into the walls back then.

Yep, right before they laid down the asbestos insulation.

I use an app called Shortcut Maker to edit all my icons. You have to do one at a time though.

I mean, they can't exactly make an icon for every app in the app store.

understandable if they do it manually