[STEVE-O]

Just curious after reading the posts. When you are using a white marker, are you trying to color in a black lettered tire to make white letters, in which case the tred-wear.com link looks good, or do you have white letters and are trying to make them more permanent / brighter white? If coloring already white letters, aren't painted letters going to get dirty and need scrubbing after driving a while?
I'd like to find something that keeps white letters white so I can avoid having to clean them.