Dec 2, 2010 #1 D diaoman New member Joined Sep 2, 2008 Messages 6 Reaction score 0 Points 1 I'm trying to find a marker or paint or whatever that will be written on coroplastic signs that don't fade out in the outdoors. I used a blue permanent marker before but it faded out to a faint purple color after a few days.
I'm trying to find a marker or paint or whatever that will be written on coroplastic signs that don't fade out in the outdoors. I used a blue permanent marker before but it faded out to a faint purple color after a few days.