Im confusseed?

Question

what does this mean

quel est noir quand vous l'achetez rouge quand vous employez lui et le blanc quand vous fait avec lui ?

Answer 1

What is black when you buy it, red when you use it, and white  when you do (something) with it?

Answer 2

I think butterfly is right.

In case you're wondering what the answer is, it's COAL.