I have a light that has 2 recolorable subsets. The light gives a white color, but I would like one of the subsets to change the light color too along with the texture.
I've looked at lights like the neon flamingo, and can see several lights for each color, but I'm not sure how they are linked to a subset.

If someone could suggest a tutorial or direct me in the right direction, I would appreciate it.
Thank you.

If the flamingo works the way you want, you could clone it and replace the meshes and textures and all that needs replacing in respective resources. That is, if no one knows a better way to do it.

I've seen glow color linked to a recolorable subset (neon club counters) and I could see the dependency set in GMND, but it didn't work when I tried it on my own object, so there's got to be something else to it.

The light colour is determined by text or .nlo files in the TSData/Res/Lights folders of the respective EPs. That is what determines the actual glow colour; this may be overridden in your own install files if you have a lighting mod, such as Radiance.