Consider ADDING color to the backs as they were originally designed. For example - red foil on the dragon would look STUNNING, wouldn't it? And if red foil was too costly, red metallic ink would probably be more within reach and also has an eye-catching appearance. The black and white designs are pretty, but think of those really cool photos where everything's in b&w except for a single element appearing in color - those really catch the attention, don't they? Well, so can this!