Final answer:
The color of the light produced by a luciferin-luciferase reaction depends on the wavelengths emitted. Different light sources with specific wavelengths produce different colors.
Step-by-step explanation:
The color of the light produced by a luciferin-luciferase reaction depends on the wavelengths they emit. Light sources have colors defined by the wavelengths they produce. A combination of different wavelengths produces various hues. For example, a helium-neon laser emits pure red light, while the sun produces a broad yellowish spectrum.