"glow off" hmmm i'm not sure about that one "lighting challenges" yeah i've seen those. the only thing i can account for is whateva tubes you get on your car it looks tacky to have them showing. i guess in a "glow off" it might be different since you have more tubes. but most show cars that enter the "lighting challenges" rarely have their tubes exposes except maybe the ones that are part of the sound systems. most interior and definitely exterior lighting are hidden with the HALO of light covering the area