Question

I am black when you buy me, red when you use me, when I turn white. You know it’s time to throw me away. What am I? [Riddle]

Answer 1

Answer:

Charcoal is the answer of the riddle.

Answer 2

$\huge{ \boxed{ \bf{ \orange{ \fcolorbox{cyan}{grey}{ANSWER}}}}}$

Here I refers to the Charcoal.