Only after havig sex with another tube.
Don't regret posting this, it is how you learn. You should have saw the responses when I asked "where do tubes come from?"
Anyway, my tubes(like other I assume) have two orange spots on top that glow, don't see it really in the daytime, but at night they are quite visible. I don't really see what the "ambience" hype is about, but then again I only have 4 tubes. Some have as many as 12. Now that might be a site.
Finally, one thing, not only do the tubes get hot, but the room does too from all the heat. Something to think about.
Regards,
Matty