The samples explore the design possibilities of solar-responsive yarns (light-emitting, color-changing, and shape-changing yarns) in textile design using knitting and weaving constructions. The textiles developed in the project Rhythms of Sunlight connect to the rhythms of nature; they form a visual representation relating acts of use to different climate conditions by being sensitive to continuous changes of light. In this process, natural phenomena are included as co-designers, allowing each piece to exhibit multiple expressions and gently completing the process the designer has opened. Beyond the textile design, the collection of artifacts generates new questions and speculates different ways of daily living with light-responsive textiles.