"Oh, but it is...! I've never used Neon, only just installed it, never adjusted any of it's settings ... and there it is: Object's Color. It may not be intended as the default, but it is, indeed, the setting that is set on initial…"
"OK, so the default setting for "Color & Material Usage" under "View:Display Modes:Raytraced with Neon was set to "Object's Color" rather than "Rendering Material". Why is that the default?