Full bright avatar or not: Not full bright - no lighting = dark gray.
Part three comparing full bright and normal avatars in the dark.... This is full bright in the dark.
Ok - so I am "well" lit here with being full bright. No shadows = not realistic. Also notice how only I am "lit" - everything else is dark still. Also notice, my white top? No? Oh that would be because its not lit and its in the dark - and colour fades in the dark.......