My guess from what I saw when they first has a very close zoom on the people handling the cards is that it would shine and have this glitter effect as they moved the cards back and forth with their hands, I couldn't read anythin except when I saw the pics online and concentrated too much I got a headache and someone had to make me see
jorvik reds, u guys should be proud of yourselves.. these guys have had a tough battle against english system but they produce some class displays considering their limitations!!