Listen to some music while you're here.

Xvenox, CC BY-SA 4.0, via Wikimedia Commons

pillows

Ohdriele, CC BY-SA 4.0, via Wikimedia Commons

All of these pictures seem different.

brain

UnseriousMind, CC BY-SA 4.0, via Wikimedia Commons

But all of them have something in common.

grafiti

Sanjumahto3034, CC BY-SA 4.0, via Wikimedia Commons

It is their colors.

Isderion, CC BY-SA 3.0 DE, via Wikimedia Commons