Rainbow
Rainbow accepts either 3 arguments, or 15 arguments.
Rainbow does not have hardware brightness control, you must scale the colour values yourself.
3 Arguments
s 1 red,blue,green
This short-hand command lets you update all 5 LEDs on the rainbow to the same colour.
You must supply red, blue and green values between 0 and 255.
15 Arguments
s 1 red,blue,green,red,blue,green,red,blue,green,red,blue,green,red,blue,green
The long-hand command lets you update each LED to an individual colour.
You must supply 5 triplets of red, blue and green values between 0 and 255.