Raspberry Pi 4 Custom Theme for XMB

I’ve went back to trying to make my own theme for my Raspberry Pi 4 B unit and the “Custom” option doesn’t seem to work correctly, I’ve loaded some icons, a background image and a font, but the only thing that works when selecting a XMB Gui Theme is the font. My Icons are not showing when it is selected.

Currently using Lakka aarch64 3.4 stable version