The picture file that causes the totem to glow cyan is called something like Will-o-Wisp, so it was intentional by creators. I looked inside contents as i was afraid something was bugging out on my computer when it happened. Am wondering if it was something they planned to add to the puzzles but decided later to not go forward with it... Just curious. As for the halo, never saw it again after that first game.... curiouser and curiouser