The default appearance is used when all other appearances have been removed.
The name of the default appearance is displayed in parentheses in the Task Pane, on the Appearances tab
, next to the Appearances folder.
When you click the
Appearances folder, an image of the default appearance is displayed with a

indicator in the Task Pane:

SOLIDWORKS provides two suggested default appearances, color and texture, both of which you can edit.
To assign a new default appearance: