Viva Magenta refuses to sit still. Across six sneaker designs, the named shade can read as wine-dark, electric, dusty, or nearly brown because pigment is only one input; fibers, coatings, and nearby colors rewrite the signal before it reaches the eye. The swatch is stable. The shoe is not.Material is the real troublemaker. A bidirectional reflectance distribution function makes each upper behave l...More