I've removed all the lights above the mushrooms and instead gave the blue mushrooms (not mushroom trees) scripts that place a light source automatically. The colour and radius of the lightsource is different depending on the type of mushroom. Instead of a bathed area of light, you get a more subtle effect. At night you can see them in the distance, but they don't provide much light (not if you are using dark gamma and light settings).

I think it's an improvement, and it automatically means that the light is present at every single mushroom.

This will cause conflicts to anyone using mods that add scripts to these plants.

I have also made some minor adjustments to the locations of ore bearing rocks. I found that not all of them actually had a light source near by, and I think it adds atmosphere to have it. I've ensured that they all have the correct light source and so the ore will look better in the depths of the mines.