Well, there is an addon that increases the brightness of the lights everywhere, permanently. If this is what you want, you can find it somewhere on SimV. Just search for "runway lights" or something like that.
If you're talking about increasing them or decreasing them as desired, I don't know. It seems to me that this is probably possible, with a little tweaking and a good airport design program.
I have an addon that has a very large hangar with doors operated by the radio. You just turn to the right frequency and the doors disappear. The only name I can find for it is BigHangar Version 2.0, located somewhere in Germany. The creator is Dirk E. Fassbender. He mentions something about help with the frequency stuff in his ReadMe file, but it is for FS2002.
His website is
www.dirkfassbender.de and his email is
email@dirkfassbender.deHope this helps some.