Will a full size sheet fit a twin bed?

Does anyone know what i could use to...
Answers:    If it's a full size sheet it will, you will just have more to tuck below. BUT if you use a fitted sheet it is going to slip and slide because it is NOT made for the right size bed.Better to buy a fitted twin size sheet.
What color couch do I buy?
It would work. I have a queensize on a full size. You just hold to tuck the bottom fitted sheet under more.
What color towels would look apt next to...
Yes as long as it isn't fitted. A fitted would work but it may be difficult to keep on tight.