IGO -adding colour schemes

Hi.I have installed in my RV a Pioneer f900 btwhich is running on pioneer firmware 4.01 and the standard UI ie not modded.I find the 2 pioneer colour schemes(pioneer red and pioneer blue)a bit boring and wondered if it was possible to add say Abbs colour schemes to give me some choice.If it is possible could someone please refresh my memory on how to do it?I quite like the 4.01 interface and dont pertiularly want to add pre configured mods,only a few colour schemes.

You just put compatible schemes in the scheme folder and then select them in the menu.