Method for operating a light (1, 13), at least three lighting means (9, 10, 11) of which are supplied by a dedicated power supply unit (3, 21), which feeds a power module comprising at least one activatable semiconductor component (5, 6 7), the activation of which takes place by way of a control module (4, 22) including an evaluation unit and a memory, - wherein, for setting the brightness of each lighting means, i.e. the colour of the light, an activating device is provided, which is connected to the phase of an AC voltage network, produces from the phase a processed phase (L') and sends it to the light (1, 13), - wherein, for changing the colour as desired, the activating device first provides the processed phase (L') with a synchronization signal (T sync), - wherein the activating device then produces an information network wave of the processed phase (L') by influencing three full waves of the network voltage in order in this way to transmit the desired brightness information signal (R, G, B) in the form of the time-based voltage curve of the information network wave, - wherein, after receiving a synchronization signal (T syn), the control module (4, 22) of the connected light (3, 13) starts an evaluation routine in order to remove from the information network wave of the processed phase (L') the desired brightness information signal (R, G, B) that has been transmitted, - wherein the control module (4, 22) stores the detected brightness information signal (R, G, B) and uses it for the activation of the lighting means (9, 10, 11) until the next occurrence of a synchronization signal (T sync) and - wherein the control module (4, 22) activates the power module in dependence on the stored brightness information signal (R, G, B), and - wherein the three full waves of the network voltage following the synchronization signal (T sync) serve as information network waves for the transmission of separate brightness information signals (R, G, B) respectively for the red, green and blue colours of light. - wherein, for setting the brightness of each lighting means, i.e. the colour of the light, an activating device is provided, which is connected to the phase of an AC voltage network, produces from the phase a processed phase (L') and sends it to the light (1, 13), - wherein, for changing the colour as desired, the activating device first provides the processed phase (L') with a synchronization signal (T sync), - wherein the activating device then produces an information network wave of the processed phase (L') by influencing three full waves of the network voltage in order in this way to transmit the desired brightness information signal (R, G, B) in the form of the time-based voltage curve of the information network wave, - wherein, after receiving a synchronization signal (T syn), the control module (4, 22) of the connected light (3, 13) starts an evaluation routine in order to remove from the information network wave of the processed phase (L') the desired brightness information signal (R, G, B) that has been transmitted, - wherein the control module (4, 22) stores the detected brightness information signal (R, G, B) and uses it for the activation of the lighting means (9, 10, 11) until the next occurrence of a synchronization signal (T sync) and - wherein the control module (4, 22) activates the power module in dependence on the stored brightness information signal (R, G, B), and - wherein the three full waves of the network voltage following the synchronization signal (T sync) serve as information network waves for the transmission of separate brightness information signals (R, G, B) respectively for the red, green and blue colours of light.