The Name And Color rollout lets you change the name and geometry color of a light. Changing the color of the light geometry can be useful when working with many lights. For example, in a scene with many different types of lights, you could make all spotlights red, and all omni lights blue to easily distinguish them.
Changing a light's geometry color has no effect on the color of the light itself. You can set the color the light emits on its Intensity/Color/Attenuation rollout for photometric lights, or the Intensity/Color/Attenuation rollout for standard lights.
To change the color of a light’s geometry:
To change the name of a light:
The light's name has changed.
The name of the selected light.
The color of the light’s geometry. This has no effect on the color the light emits.