Answer:
Searing 'cross the pitch-black skies I scream in celebration Yet moments later my outburst through I am naught but imagination.
Draw fire or fill me; I'm still empty.
I stand in one place yet fill the whole room. I can be filled with molten rock and come in every hue. What am I?
The more of me there is the less you see.
Never ahead, ever behind, yet flying swiftly past, for a child, I last forever, for adults, I'm gone too fast.
When is it bad luck to see a black cat?