Answer:
Always wax, yet always wane: I melt, succumbed to the flame. Lighting darkness, with fate unblest, I soon devolve to shapeless mess.
When liquid splashes me, none seeps through. When I am moved a lot, liquid I spew. When I am hit, color I change. And color, I come in quite a range. What I cover is very complex, and I am very easy to flex.
It's the only vegetable or fruit that is never sold frozen, canned, processed, cooked, or in any other form but fresh
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
Dark, feathery, and popular in Baltimore and fantasy books.