I have sent a select few of you the files that I have, since I've been finding myself less inclined to do CS work as I would like lately, that being said, this really isn't as complicated a mod as the video makes it seem, it involves quite a few scripted sound activators and light sources, but otherwise everything in this mod has actually been done before except perhaps the "lightning" flashes, but those are really just scripted light sources.
There are two keys to making this work, one is that the interior has to have its ambient/sunlight colors close to black, like 5/5/5 or something, and two is the color of the light sources used, for day light coming through the window, you want it to be near white, though to be honest, I would like to take it a step further and make it so that their are 3 lights there, one for morning(perhaps a bit more orange), one for day(near white), and one for dusk(a bit more reddish orange), making it feel as if time is passing while in an interior.
Anyways, I have no doubt that it would still be a huge undertaking to correctly place and script so many activators and light sources though out the game, which is why I haven't done it myself yet, but incorporating this into current mods that already do some of the work might be a good idea.
For instance, there are already mods that have the weather sounds carried into interiors via activators, and patching those mods with your scripted light sources might take some of the time out of doing the work, I promise that some day I will put forth some work into this mod, at least for my own personal use(which of course I would share), but I don't have any idea when I could hope to have something like that complete, so I won't make any promises, or even hint a time frame.
So if anyone else that feels more progressive than I, and would like to work on the mod, feel free, and most of all, have fun. I just hope that if anyone does work on this before me, they will be willing to share their work with the community, and won't go into hiding.
Edit: It would also be kind of cool to go ahead and throw in some different light sources based on which weather is present in the region at that time(follow your own ini color settings of weather for the light sources type of thing) or perhaps a just smaller radius of light for the darker weather light sources...rather than try to make something that works for everyone's .ini settings, and script it to activate the lights based on both time and weather, rather than just time of day....ok, I'm done thinking about this right now....