What am I?

Tear one off and scratch my head. What once was red is black instead. What am I?

related riddles

I am too much for one but not enough for two. Give me to a third and I am gone. What am I?

I’m an old relative who’s hand’s can’t hold anything and eyes can’t see anything. What am I?

Black within and red without, With four corners round about. What am I?