A light bulb adapted to illuminate an object and to emphasize and/or deemphasize perception of at least one color of a target surface of the object having a characteristic reflectance spectral distribution, the light bulb comprising: a plurality of solid state emitters (111-115, 211-213) including a first solid state emitter having peak output emissions at a first wavelength, and including a second solid state emitter having peak output emissions at a second wavelength that differs from the first wavelength; at least one lumiphoric material arranged to convert at least some emissions from any one or more of the first solid state emitter or the second solid state emitter ; characterised by said light bulb further comprising at least one sensor arranged to sense reflectance spectral distribution or reflected spectral power distribution of light reflected by the target surface of the object, and configured to provide an output signal; at least one circuit element including a ballast, being configured to receive the output signal, and being configured to control operation of the plurality of solid state emitters (111-115, 211-213) responsive to the output signal to output an aggregated spectral power distribution selected to emphasize and/or deemphasize perception of at least one color of the target surface of the object illuminated by the light bulb based upon the sensed reflectance spectral distribution or reflected spectral power distribution; and a wireless receiver operatively coupled to the at least one circuit element and adapted to receive, from a wireless transmitter , an input signal to effectuate one of the following functions (i) to (iii): (i) adjust operation of one or more solid state emitters (111-115, 211-213) of the plurality of solid state emitters (111-115, 211-213) individually, (ii) select one or more predetermined operating settings of the light bulb , or (iii) effectuate alteration of emphasis and/or deemphasis of perception of at least one color of the target surface of the object. a plurality of solid state emitters (111-115, 211-213) including a first solid state emitter having peak output emissions at a first wavelength, and including a second solid state emitter having peak output emissions at a second wavelength that differs from the first wavelength; at least one lumiphoric material arranged to convert at least some emissions from any one or more of the first solid state emitter or the second solid state emitter ; characterised by said light bulb further comprising at least one sensor arranged to sense reflectance spectral distribution or reflected spectral power distribution of light reflected by the target surface of the object, and configured to provide an output signal; at least one circuit element including a ballast, being configured to receive the output signal, and being configured to control operation of the plurality of solid state emitters (111-115, 211-213) responsive to the output signal to output an aggregated spectral power distribution selected to emphasize and/or deemphasize perception of at least one color of the target surface of the object illuminated by the light bulb based upon the sensed reflectance spectral distribution or reflected spectral power distribution; and a wireless receiver operatively coupled to the at least one circuit element and adapted to receive, from a wireless transmitter , an input signal to effectuate one of the following functions (i) to (iii): (i) adjust operation of one or more solid state emitters (111-115, 211-213) of the plurality of solid state emitters (111-115, 211-213) individually, (ii) select one or more predetermined operating settings of the light bulb , or (iii) effectuate alteration of emphasis and/or deemphasis of perception of at least one color of the target surface of the object. <EOS>