Glowstick radius

[Googolplex]

I really enjoy that green shimmer. I missed it in Black Plague.
The light was a good atmospheric bonus. In Black Plague the glowstick doesn't improve the atmosphere - it'd by far too low. But it's realistic because of the lifetime of a glowstick.
But I find that Overture looks the best. And it's the best Penumbra game because of the experience (more involving puzzles etc.) but Black Plague was a bit more horror.
I think you have so search the shader folder to change lighting effects.
This is the way I reduced the item lights in Amnesia.