Ahh! Registry hacking! Of course.
Ah, hacking about the registry - perfectly acceptable in Windows. Nobody bats an eyelid.
User might have to copy and paste a couple of lines into a terminal in Linux (though normally there is a GUI setting but its varies from DE to DE) and it's - "Arrgh! Linux is so hard to use, it's for geeks only, you have to use the CLI for everything!!"