Colour changing LEDs for Wigton Christmas lights

 

The lights on the fountain this year are able to change colour. The spectrum shown above is able to move and change. I was wondering how single lights could do that. It turns out that each light is made of red, green and blue LEDs which are then turned on and off to make mixtures. See https://kitronik.co.uk/blogs/resources/how-colour-changing-leds-work