From Rusted Promises
|Description||A quirk in your family line has manifested in you, allowing you to emit light. You can control this to a degree, at least in brightness from that of a very low burning candle to that of a lantern. The color is always the same, however, unless you have the chroma control perk.|
If you have this and Chroma Control, you can change the color of the light, including to colors that don't actually cause a glow.