How to modify the lighting tile property for fireplaces?

[howedygrim]

Alrighty, so lighting is supposed to be modified through the tile properties, and when you look at "campfire" under "camping_01" it has light checked. (Picture below)

Yet for whatever reason, when looking at the fireplaces under "fixtures_fireplaces_01", there's nothing changed under tile properties.

 

My goal here is to simply change the color of the fireplace's light. I figured it would be as simple as changing a few values, as seems to be the case for the campfire. Can someone please lead me in the right direction? Thanks in advance.