Vertex color picker? - Basics & Interface - Blender Artists Community
Using vertex colors in Blender 2.8 | by Ben Olayinka | benlearnsblender | Medium
Vertex Paint - Layer system and more. — Right-Click Select
GitHub - Philipp-Seifried/Blender-Normals-To-Vertex-Color: Simple Blender 2.8x addon that copies a selected object's normals to its vertex colors. Useful for some shader tricks.