Технологии

Ну ёлы палы. Вики: https://en.wikipedia.org/wiki/Color_temperature

Many other light sources, such as fluorescent lamps, or LEDs (light emitting diodes) emit light primarily by processes other than thermal radiation. This means that the emitted radiation does not follow the form of a black-body spectrum. These sources are assigned what is known as a correlated color temperature (CCT). CCT is the color temperature of a black-body radiator which to human color perception most closely matches the light from the lamp

То есть в идеале надо детектор, аппроксимирующий колбочки. То есть качественно сделанные светофильтры RGB. А кто их сделает за копейки?