1. A light emitting device including at least one organic light emitting device (OLED) that is substantially transparent (TOLED) when de-energized, comprising: a substantially transparent substrate having top and bottom surfaces; a first substantially transparent thin film coating of indium tin oxide (ITO) applied to the top surface of said substrate; a substantially transparent coating of a hole conducting material applied over said ITO layer; a substantially transparent layer of an electron conducting and highly electroluminescent organic material overlaying said ITO layer; a relatively thin film of a substantially transparent metal electrode applied over said organic material layer; a second substantially transparent thin film coating of ITO overlying said metal electrode film; and first and second electrical contacts bonded to said first and second ITO layers for receiving a bias voltage to energize said device, and cause it to emit light of a given color from top and bottom surfaces thereof.