Door to door

As you start to walk, Albert points you in a direction of the gym he doesn't go to. You both walk down the hall until you reach a large room at the end. The room has a red door on the left wall, blue and yellow doors on the wall opposite of you, and one green door on the right wall. In the middle of the room appears to be a lift that goes down.

'Well,' Albert starts. 'You good at gameshows? Pick out the door that has the mystery prize.'

You walk further into the room and pick the...