Appearance folder

The Appearance folder was introduced to the System Folder of classic Mac OS, starting with Mac OS 8.5 in October 1998.

Location
The Appearance folder can be found in the root level of the System Folder from Mac OS 8.5 to 9.2.2. It contains three subfolders, housing the components of a theme:


 * Desktop pictures: These are images that serve as the backdrop to the desktop.
 * Sound sets: These are sounds that play when the user opens a window, drags the title bar, clicks buttons, etc.
 * Theme files: These are desktop picture / accent color combinations that appear as theme choices in the Appearance control panel (Mac OS 8.5 and later).