I envelope you in darkness but you see many things. I can be resisted but a lack of me leaves rings. What am I?

Question

I can sizzle like bacon; I am made in a egg; I have plenty of backbone but lack my legs. I peel layers like an onion but still remain whole. I can be long like a flag pole yet fit in a hole. I come at you in all sorts of colors and sometimes I like being around water. What am I?

Answer 1

It can be Sleep

Answer 2

It can be CANDLE