Vertex Color Source

You can find the Vertex Color Source drop-down box under the Attribute Editor of a polyShape node, under Mesh Controls.

Use this feature to color your vertices based on influence colors or based on a color set.

Current Color Set

Select this option to color your vertices based on the current color set. Add paint to your geometry, for example, by using the Paint Vertex Color Tool and select Current Color Set from the Vertex Color Source drop-down list to see the vertex coloring in the scene. Select Display > Polygons > Vertices to display the vertices to see their coloring.

Influence Colors

Select this option to color your vertices based on influence colors. After binding your geometry to a skeleton or joint, Vertex Color Source is automatically set to Influence Colors. Display vertices to see the vertex coloring in the scene.

See Coloring vertices in Viewport 2.0 for more information.