This paper presents an illustrated discussion of the potential for creative design applications of thermochromic textiles brought into contact with specifically designed heat-profiling circuitry. The results are derived from a current research programme at the design/technology interface on the application of colour change technology in interior textile design. Examples are given of textile samples combining printed thermochromics with circuitry to demonstrate the aesthetic qualities that can be achieved from integration of the technologies in a flexible fabric system. Dynamic colour change effects controlled by prototype circuitry and power electronics are demonstrated. The paper concludes with an analysis of the potential for product/artefact development in the area of “smart” design and how, as a consequence, a responsive interior might be envisaged.