Something about red cheers me up, going bright red, seeing a red sky, the glowing coals on a fire. The cherry red of a poker?

Red seems to signify heat and health, richness and cheerfulness. Go further along the spectrum and you get to infrared and far infrared. These colours outside of the visible spectrum can still be seen with infrared cameras, where you can then see the heat signature of objects like the heat radiating from windows and hot mugs.

Red is also the colour of life and blood. Of holding your hands up to bright light and seeing the red colour as it shines through your flesh. Red is love and hearts 💕