Good Riddles

Question: I am dark and can never be light, but I can be lit. What am i?

Question: What goes black when you buy it, red when you use it, and goes white when you throw it away?

Question: what's the difference between a jeweler and a jailer?

Question: someone came into my shop and stole 100 dollars from the register without my knowledge. the person came back 5 minutes later with the same 100 dollars and bought 70 dollars in items and i gave him back 30 dollars change. How much did i lose?

Question: Your friend is OCD and has to have things in a particular way. She even labels her socks so that the sock for the left foot will always be worn on the left foot and vice versa. Why did she lace her left shoe with a brown lace and the right one with a green lace?