I think a missed opportunity on the website would be to have a flip button to change the colors pallete too!
White background black text and flip back to the current one!
I believe they address this on the last sentence of the blog as a measure to prevent abuse on the free-tier they ask for credit card info, they specifically complain about cypto mining
Windows has PowerToys [1] with the tool FancyZones, I've used it daily for a while and in general works pretty well, it's customizable and I use it to setup "zones" for working and splitting my tools into predefined spaces on muy screens.
Dogfooding: eating your own food. Is refer to the practice of using you own product as your main service, being your own customer.
As example, there's a story where every Android (OS) developer where given basic Android phone with low RAM as their main device, they where aiming to decrease the resources the OS required and using the phone by the developers allowed them to experience first hand what low income/cheap phone owners felt IRL, thus allowing them to better focus on improving the product on real pain points experienced by themselves
Very cool project!