Found out a little more information. After a great deal of searching I was unable to locate the company "JB Fuller". I did however, find out that the code number WAPB-9789 is a GM code number and most auto paint stores can make this product.
I went to a Dupont auto store in Bowling Green and they referenced this code number in their system. The problem is that they did not recomend using this a "touch up paint" because if it was brushed on it may not look great. They suggested having it sprayed on and use a clear coat over the gray.
At this point I decided to take their advice and not try to "brush" any on.
But, I am a little Fanatical about how things look.
Just got done re-tuouching my rim using the kit supplied with Ultimate Touch -up Systems. I ended up removing the tire from the rim and lightly sanding the very outside edge of the wheel to remove the light scratches. I masked off just the 3/16" edge with the scratches and sprayed the match provided from Ultimate using an airbrush. After a few coats of silver metalic and a few coats of clear, it looks as good as new. Perfect match!
I would not suggest spraying the entire wheel if it not necessary. I was impressed with Ultimate and they even through in some black touch up paint for the car if I needed it in the future!