Move the code over to your Raspberry Pi, and in your SSH session, navigate to your project folder using cd and run your project (be sure to use sudo!):

sudo node rgb-led-repl.js

Then, you can manipulate the RGB LED and the color library to change the light's color. Here are a few things to try:

>> rainbowCycle = false // this stops the rainbow color cycle
>> rgbLED.off() // turns the RGB LED off
>> rgbLED.color(color('rebeccapurple').rgb().array()) // sets the LED purple!