The scarf has two pairs of sensors with light outputs. The tri-colored LED responds to temperature, where the red indicates heat, and blue indicates cold. The light is blended for moderate temperatures. On the other side of the scarf there is two white LEDs that respond to the light sensor on the same side. The lights will turn on in darkness, the video shows a demo of this. All the sensors inputs are first averaged and then change after 3 seconds so that the lights are not changing too frequently on border cases. I tried to hide the electronics as much as possible.

If I had more time I would have incorporated EL wire, but learning to work with conductive thread and sewing took the majority of my time. My proposal had the EL wire glow depending on temperature.