NunoErin, a US based company creates heat sensitive interiors using a range of materials and thermo responsive sensors. Their products include these heat sensitive stools that change colour when in contact with the body or hands. The imprint lasts for several seconds before slowing fading back to the original colour. Colour styles include teal green to yellow green, blue to white and purple to pink. They also offer thermosensitive lounge chairs, wall panels and pillows.