The company SensiTile has developed a series of interactive materials that respond to motion, light and color. SensiTile proposes translucent polymer, cast concrete, cast resin tiles.
Apparently a lot of designers have started using the material in their concept, such as Zaha Hadid Architects in their winning proposal for Boulevard Der Stars Competition. The tiles are inserted within the pavement which glow and ripple in the day and night against the light and the shadows created by the pedestrians.
Boulevard Der Stars proposal