Cleaned up version of DigiRGB script

DigiRGB.py

#!/usr/bin/env python

#
# Written for PyUSB 1.0 (w/libusb 1.0.3)
#
# Original Author: follower@rancidbacon.com
# Heavily edited by bensonk42 -at- gmail
#
# Version: 2013-02-26
#

#
# Assumes 'DigiBlink.ino' is loaded on the DigiSpark and 
# LEDs are present on pins 1, 2, 3
#

from arduino.usbdevice import ArduinoUsbDevice

import sys
import time
import usb # 1.0 not 0.4
import webcolors

if __name__ == '__main__':
    theDevice = ArduinoUsbDevice(idVendor=0x16c0, idProduct=0x05df)

    args = sys.argv[1:]
    if len(args) == 1:
        color_list = webcolors.name_to_rgb(sys.argv[1].lower())
        color_list = list(color_list)
    elif len(args) == 3:
        color_list = map(int, args)
    else:
        sys.exit('usage: {0} <color>\n' +
                 '{0} <red> <green> <blue>'
                 .format(sys.argv[0]))

    print color_list
    theDevice.write(ord('s'))

    for value in color_list:
        theDevice.write(value)