The vertex color of left & right parts are exactly symmatric (R,G,B,Black,White).
However, if I select only right faces, the left faces will be fade (show below).
When I paint, the white-mix-looking of unselected faces (half left) makes me confuse.
How to remove the white foggy that the blender paint over unselected face?
I still want the white outline to show.
The setting should be somewhere in Preferences>Themes>3D Viewport, but I can't find it.