This is quite a short project honestly. The way this works is that using Ammonia, which is a system tweak and extension loader for macOS, I inject some code into the macOS Dock that replaces the open-app indicator with my version as you can see below, and it adds a view below the app icons of the “reflected” app icons. I also made a small utility app to adjust these values in. This injection is unsafe and can crash your mac, and needs disabling multiple security options, so doing this isn’t recommended for most people, but I really like how these look so I’ll keep it. 🥰