Hi Gene, unfortunately I didn't take any photos of the 'light' technique.
However I will try to explain what I mean with 'light' using my last project were I used what I would call 'heavy' salt weathering.
I guess that's the one you are familiar with.
I used it to create a very weathered and well used surface on my Coast Guard Catalina...
After painting the basic surface color, which was white on the Catalina, I moistened the surface with water and applied ground salt (important to get different sizes of salt particles). Then several mixture of grey, brownish and dirty white was airbrushed to get the worn look. You can also remove some of the salt and apply it elsewhere to get varied layers.

And yes it is a mess working with it, but I haven't found any other method that comes close to the results you get this way.
I have even used it on NMF surfaces with similar great result.
Surface after salt weathering technique:

This kind of weathering would be 'over the top' for most projects...
Now what is it with the 'light' version? Well same technique, with about the same amount of salt applied to the surface.
The difference is to use very diluted paint and a color not too dissimilar to the base color.

This will add a 'milky' pattern/texture to the already darkened surface by the Flory dark dirt.
Hope this explains the 'light' a bit?
Cheers: Kent