Wait for instructions
After a few moments, an unkempt, slightly distracted-looking person turns towards you and says, "Don't touch anything yet."
Do you?
Hold your finger close to the red button and say 'I'm not touching it'
Hold your finger close to the blue button and say 'I'm not touching it'
Hold your finger close to the black button and say 'I'm not touching it'
Hold your finger close to the green button and say 'I'm not touching it'