Answer:
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
I am a house with two occupants sometimes one rarely three. Break the walls eat the boarders then throw away me.
I canβt go left I canβt go right. I am forever stuck in a building over three stories high.
I have every color but no gold.
No matter how little or how much you use me, you change me every month.