Tiny Whoop Headlight LED - Color Changing

This unique little LED is 5mm x 5mm and slowley cycles thru all the colors of the rainbow with bright clear light! It's amazing to me that this LED weighs only 0.5g including 10cm of wire! This wire can be entirely removed, as there is no capacitor nor controller other than what is installed inside the LED.

Here's a quick video showing this LED in action!