Thea Cursor  is a very handy tool and can be used to:

  • Select an object’s material by clicking on it.
  • By double-clicking on an object, the selected material will be opened in Thea Material Lab.

The material can be selected either by clicking with the Thea cursor in the Viewport or in Thea Darkroom.

Note:
Thea Tool must be opened for the cursor to be enabled.

You can see it action here…