Developer Lapy is currently working on a homebrew application that allows you to change your PS4 Icon Masks, which looks amazing! The application is still in the testing stage, so there’s no public release as of now. For the people wondering what the firmware limitations are, Lapy is currently testing this on FW 9.00.
This application has so much potential, and I can’t wait to install some custom PS4 UI’s. (Imagine the PS5 UI on a PS4 😱)