Settings > Theme Settings
Theme Settings
Adjust settings to customize XMB™ for items such as the background or the font for on-screen text.
Wallpaper
Set whether to use an image that was selected as wallpaper under 
(Photo) as the XMB™ background.
Font
This setting can only be selected when the system language is set to Japanese.
Set the font type to be used in XMB™ or in messages under 
(Friends).
