Color as an element of vivacity, glee and MUTATION, too. Driven by this emotional mood, EMMETEX creative staff conceived and realized woven labels with a double identity, unveiled with a simple HEAT play. Woven accessories, primarily woven labels, but even patches and tapes, produced according to required colors, undergo a bath with encapsulated heat reactive pigments which interacts with the jacquard base giving origin to a second chromatic identity. Following the action of a heat stress, like, for example, a slightly strong pressure of a hand, the applied color is made invisible and discloses the original colors of the accessory. This is a SMART application, a chameleonic device of extreme simplicity, capable to offer an opportunity of great emotional participation for those involved in fashion design. They will take inspiration from this development and conceive new solutions for swimsuits, t-shirts, shoes, accessories to match garments.