Always there, right with you, reflecting back all you do. I am dark, though made of light, and almost always within your sight. I follow along while you run, and when you're quiet, we're both done. There are times when I will go, but not for long, as you well know. Once the sun pops out again, then I'll be your closest friend.
Who am I ? Answer: Your shadow ☺
* I thought the hint was funny: who am I? (eye shadow- lol!) It was tough to come up with a clue for this one!