Hi! First, you need some tools for this to work: MacroDroid, my backup file and 9 images which shift between 3 AM and 10 PM. They are adjusted just right so they correspond to the time of the day.
You can download all you need from here.
I have Nova Launcher, I've made my own icons, they aren't packed or anything, just edited via every icon's menu in Nova. It isn't required tho to achieve this effect.
Check out my Reddit post about it.
Enjoy! 🤗☕🥐