Answer:
What is the smallest bridge in the world?
Where humans breath liquid?
I can be moved. I can be rolled. But nothing will I hold. I'm red and I'm blue, and I can be other colors too. Having no head, though similar in shape. I have no eyes - yet move all over the place.
According to the music industry, you can count on a midnight train and the devil to turn up here.
Always wax, yet always wane: I melt, succumbed to the flame. Lighting darkness, with fate unblest, I soon devolve to shapeless mess.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?