You're very welcome theater_lover.
Mohawk makes good products and I used their products for many years. So that clear pen may do the trick, too bad they don't show what the tip looks like. I found that a hint of color helps to blend in the white a bit but I bet that clear will work fine.
One last tip I will add here: Whatever method you use, do not make your assessment of the end result with your face 2" away from the work. Instead stand up and view it from a normal viewing distance of maybe a foot away and if it isn't visible or doesn't stick out your probably done. When you know it's there, and your face is down on the speaker like you were working on it, no matter how good the repair is you're probably going to see it. Not always but most times.
Mike
The likely cause is the plastic over-bag directly rubbing on the paint surface underneath the rigid foam end cap in shipping. When they leave our factory, the speaker is first covered in a plastic stretch film, so that the over-bag is not directly contacting the paint. We have had excellent shipping results using this method. When buying a used product, all bets are off.
The paint is a medical grade, 2-part Polyurethane paint with a textured top coat and no separate clear coat over it. It seems like Woodsage is correct in his recommendations, but he would not have known that there is no clear coat. The problem with trying to rub it out is that not only will it probably not work, but will likely leave a shiny area that will look even worse. The company that paints the speakers for us said that when they run into this type of abrasion issue, they just re-paint the entire product, as repair is usually not workable.
So the best solution, short of re-painting the speaker, is to try the furniture markers to cover the white abrasion marks.
Clayton