I have just installed one ui 7 on my s22, and i prefer this icon pack called 'one pro dark' to the normal icons, however when I use one pro dark icon pack it makes the folders that the icons are in go pitch black and it just looks off, it's supposed to be the same color as the outside folder colour, and it didn't do this on one ui 6. I have uploaded pictures to help. And hopefully that makes sense. Thanks
It didn't let me upload all pictures so here are the other 2 
Have you ever looked at what it says in the description of every theme, wallpaper, icon in Galaxy Themes?
The same goes for Google Play themes, launchers, icon packs, wallpapers.
