Maybe red fabric paint? I did that once with a red white and blue quilt - I used a red and white gingham that read pink from just 10 feet away. I took a star squilt course from Diane MacLeod Shink, (Dimac.com) a quilt evaluator 10 yrs ago - she uses a 2' and a 10' rule before every step - maybe a 20' - 30' rule should be added to that.