Answer:
What is black when you buy it, red when you use it, and gray when you throw it away?
You do not want me when you donโt have me, but when you have me you donโt want to lose me.
I am Invisible Man's drink at snack time
If you break me, I'll not stop working. If you can touch me, my work is done. What am I?
I always run but never walk often murmur but never talk have a bed but never sleep has a mouth but never eat.
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?