Hey Crew! Calling all Central enthusiasts out there. I'm upgrading some of my corrugated streamliners. They all have silver letter boards with black lettering, but I want to switch to coloured boards with white lettering, as they were in the final days. Here we go now....Were these boards painted a dark gray, or were they some kind of shade of deep blue? I've seen pictures of BOTH, and I'm not sure if the negatives are going, or if my memory is going. Which is it, and which specific paint on the market would you recommend? George.