Does anyone have an idea which mod it is that changes Hlaalu windows from their vanilla green to http://i.imgur.com/7S96fuK.jpg? I prefer the vanilla version - plus I have no idea which mod I've installed lately that changes this as none of them should affect this as far as I know.

EDIT: OK, found it after some detective work. It's from Vivec-Velothi Retextured V3.

I recommend you install Windows Glow as well as its various addons. It should return the Hlaalu windows to the vanilla green and the mod adds a nice glow effect to the windows at night. Also, be sure to get the texture tweaks for the imperial windows on mw.modhistory. I can't link them right now, but they improve the tone of the colors on the imperial windows quite a bit.

I am using Windows Glow via MGSO, but I guess it has been overwritten. I'll check the install (there's no Window Glow option via MGSO that I can see) and add the tweaks as well. Thanks!

EDIT: Guess you mean http://mw.modhistory.com/download-56-14402? I'll check it out.

EDIT 2: Or perhaps rather http://mw.modhistory.com/download-53-6563? Anyway, I'll try them out.

You probably already figured this out, but the Hlaalu glass texture is tx_glass_amber_02.

Thanks, I did, but that would have saved me some time. I found the mesh via the Construction Set and then extracted it from the bsa and checked it with NifSkope...