You can also change the colour/texture of reflectcube.dds but this is a cubemap 1 bit explicit alpha.
It's this texture which gives the glow. It's mixed with bec_submarine
To reduce the glow you need to open up a compartment GR2 & sim file (ie room_CR.gr2 and room_CR.sim) look for the bulb entries (This could be one of many things eg bulb-housing, sticla etc) and then edit the controller.
Render-EnvMappingController will give you access to what you need to dim the bulbs -- and to add new textures, if you like, to the reflection.
I think the only way to change the alpha of the bulbs is within the 3d model itself which is not accessible.
Before/After: Before is Naichts screenshot from the beginning of the thread -- no work on the bulbs. After is not exactly an apples to apples comparison as it uses Darker Interiors which effects the ambient lighting and a small mod by myself which effects the textures of the bulbs and edits the gr2 files.
The bulbs still glow, but they're not so harsh and they're yellow.
I'm sure this can be done better -- I'm just trying to share the info I have
