A lighting system for emitting light of a color within a color specification region within a gamut of human-perceivable colors, wherein the lighting system consists of two light emitting devices, wherein said two light emitting devices are: a primary light-emitting device on a common substrate configured to emit light of a first color; and an intensity-controlled light-emitting device of single color on the common substrate adjacent to the primary light-emitting device, the intensity-controlled light emitting device configured to emit light of a second color different from the first color, the light emission of the intensity-controlled light-emitting device combining with the light emission of the primary light-emitting device; the lighting system being characterized in that it further comprises: a lens positioned in front of the primary and intensity-controlled light emitting devices (306 and 308) so as to focus the light received therefrom; a color-detecting device on the common substrate configured to detect a color of a portion of the combined emissions of the primary light-emitting device and the intensity-controlled light-emitting device reflected by a back surface of the lens; and a controller comprising a microprocessor, the controller configured to receive a signal indicative of the detected color from the color-detecting device, wherein the microprocessor is configured to compare the received signal with the color specification region, and when the detected color is outside the color specification region, to calculate a color-correction intensity that would bring the detected color into the color specification, and wherein the controller is configured to generate an intensity-control signal corresponding to said calculated color-correction intensity that controls an intensity of the light emitted from the intensity-controlled light-emitting device such that the detected color of the combined light emission is within the color specification. a primary light-emitting device on a common substrate configured to emit light of a first color; and an intensity-controlled light-emitting device of single color on the common substrate adjacent to the primary light-emitting device, the intensity-controlled light emitting device configured to emit light of a second color different from the first color, the light emission of the intensity-controlled light-emitting device combining with the light emission of the primary light-emitting device; the lighting system being characterized in that it further comprises: a lens positioned in front of the primary and intensity-controlled light emitting devices (306 and 308) so as to focus the light received therefrom; a color-detecting device on the common substrate configured to detect a color of a portion of the combined emissions of the primary light-emitting device and the intensity-controlled light-emitting device reflected by a back surface of the lens; and a controller comprising a microprocessor, the controller configured to receive a signal indicative of the detected color from the color-detecting device, wherein the microprocessor is configured to compare the received signal with the color specification region, and when the detected color is outside the color specification region, to calculate a color-correction intensity that would bring the detected color into the color specification, and wherein the controller is configured to generate an intensity-control signal corresponding to said calculated color-correction intensity that controls an intensity of the light emitted from the intensity-controlled light-emitting device such that the detected color of the combined light emission is within the color specification. a lens positioned in front of the primary and intensity-controlled light emitting devices (306 and 308) so as to focus the light received therefrom; a color-detecting device on the common substrate configured to detect a color of a portion of the combined emissions of the primary light-emitting device and the intensity-controlled light-emitting device reflected by a back surface of the lens; and a controller comprising a microprocessor, the controller configured to receive a signal indicative of the detected color from the color-detecting device, wherein the microprocessor is configured to compare the received signal with the color specification region, and when the detected color is outside the color specification region, to calculate a color-correction intensity that would bring the detected color into the color specification, and wherein the controller is configured to generate an intensity-control signal corresponding to said calculated color-correction intensity that controls an intensity of the light emitted from the intensity-controlled light-emitting device such that the detected color of the combined light emission is within the color specification.