Program Backgrounds

[Kemik]

Hello,

My dad has bought a mac and likes the way Windows adds a grey background to Photoshop and programs like that. Is there any way to add this background to Photoshop in Mac?

Thanks.

P.s. Don't shoot the messenger. He likes certain things in Windows that he doesn't get from a mac.

 

[Kemik]

Thanks guys, but I think he wants it to stick for every time he uses photoshop, also for any other program where you can see through it to the desktop.

Apparently if he clicks the desktop by accident while in photshop it changes to the desktop and he has to click the PS icon to get back in to photshop.