Answer:
The more you have me the less you see. Shine a light on me and I shall flee.
Although it sounds like I work on a transportation device I actually work in a restaurant.
I am seen in the water. If seen in the sky I am in the rainbow a jay's feather and lapis lazuli.
The warmer I am the fresher I am.
I am a tale in childrens' minds. Though an illusion, I occur every night. I give them a fantasy, I give them a fright. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.