Detect Heat/Cold

You touch a willing creature to grant it the ability to see in infrared. For the duration, the creature has heatvision to a range of 60 ft. Extreme cold appears dark purple, warming to blue-green, then yellow-orange; extreme heat appears red. For example: a hot coal gives off little light, but would appear as bright red, next to the warm-blooded humanoid who skin would appear as yellow and whose comparatively cold metal armour would appear blue. The creature can see in the visible light spectrum and darkvision as they would normally, but their ability to accurately perceive colour is superseded by the heatvision.