Most of the old plots are done with roscolene color, its hard to even find those swatch books anymore. You usually have to either know someone who has held onto one or get lucky and find one while digging around in an old light shop.Wow, so many good ideas. I think it would be interesting to study the old plots, and to gain an insight into "how they did it". I'm always interested in food for thought, theatre history and seeing how the legends used their striplights. I also checked my swatches, R384, Midnight Blue, is 2%, R382, Congo Blue, has an amazing 0.56% transmission.