The cube and sphere are built-in generic visual marks (uses generic mark script) and thus have the generic visual channels described in the Encoding documentation page. Below are some visualization examples using the cube and sphere marks.

The rect and tick built-in visual marks are resized versions of the cube mark that are provided for convenience. Visualization examples using rect and tick marks are shown in the Examples page.

Cube

Sphere

Sphere (using default color)

Note that if the color channel is not specified in the vis specs, Unity's default material shader settings are used as shown below.