view port lighting

 From:  xrok1
1295.1 
i think i saw this somewhere but can't seem to find it.

the problem is lots of the time the angle i want to edit something at is the worst angle for lighting. faces are dark and i can't recognize geometry.

is there a way to move or better yet add another light, preferably a headlight on the camera itself? of course this would only need to work for the 3D viewport.
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