oooooh hubbawubba, did the nightclub have UV lights in? because i think its like a UV glow in the dark type thing... i have no idea tbh! reviews ive read though say it glows under a UV light. aaaaaaaand i saw a picture of the tube and they look very bright and 'now' colours i imagined them to be lighter! im really loving these, will have to go check 'em out! haha they can go with my neon fancy dress outfit haha