Prometeus is a lamp with sensitive surface. The concept of this lamp puts aside the concept of switch. Instead of this there is a direct interaction with the light surface.
A person does not "turn on the light", but creates it. He draws on surface, determines the direction and intensity.
An elegant minimalistic shell hides the light under its cold surface that is gently extracted at a touch. The light as a mysterious life form fills up the required shape on the surface, reacts and plays.