"Looking for some ways to dye white frosting blue, but trying to avoid using food coloring!" the original poster wrote. "I've heard spirulina powder, or even freeze [dried] blueberries." With the OP ...

has glasses with blue frames and often finds her hands are blue from dye — has been in thrall to the color since 1993, when she and her husband, Henri, bought a derelict tannery in Lectoure ...