New Vertex Color

Location: Face menu or Right click on a face

Applies a new, unique Vertex Color to all selected faces. The color is unique and distinct from all vertex colors in the active collection.

Copy Vertex Color to Selected

Location: Face menu or Right click on a face

Copies the Vertex Color from the Active selection to all other selected faces.

Select Similar Vertex Color

Location: Select Similar menu with a Face selected

Selects all faces that share the same Vertex Color as the active selection.