Script for toggling my Raspberry Pi NeoPixel chromakey ringlight

neo

#!/usr/bin/env python3
"""Script for toggling my Raspberry Pi NeoPixel chromakey ringlight

Usage:
  activate with default power of 64/256:
    ./neo
  activate full power:
    ./neo 64
  deactivate:
    ./neo off
"""

import sys
from time import sleep
import board
import neopixel

brightness=0.1

# Choose an open pin connected to the Data In of the NeoPixel strip, i.e. board.D18
# NeoPixels must be connected to D10, D12, D18 or D21 to work.
pixel_pin = board.D18
#pixel_pin = board.D10

# The number of NeoPixels
num_pixels = 16 + 12

# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!
# For RGBW NeoPixels, simply change the ORDER to RGBW or GRBW.
ORDER = neopixel.GRBW

class cycle():
    on = 1
    off = 1

pixels = neopixel.NeoPixel(
    pixel_pin,
    num_pixels,
    brightness=brightness,
    auto_write=False,
    pixel_order=ORDER
)

def on(green=64):
    print("green: "+green)
    pixels.fill((0, int(green), 0, 0))
    pixels.show()

def off():
    pixels.fill((0, 0, 0, 0))
    pixels.show()

def main(args):
    if args and args[0].lower() == 'off':
        off()
    elif args:
        on(args[0])
    else:
        on()

if __name__ == "__main__":
   main(sys.argv[1:])

I purchased a "WS2812B Ring 5050 RGB SK6812 5050 RGBW Ring 93 241 Bits addressable leds DC5V" from seller "sz_jiufeng" on ebay and am driving them via Adafruit's Python libraries. I have brightness set to 0.1 or 0.2 and the color set to (0,64,0) which is only 1/4th of the full (0,255,0) that would be "full bright green" (so I'm guessing that to be around 1/40th or 1/20th power.) It works great. I have a "SILVER REFLECTIVE FABRIC sew on material width 39-inch by length 1 yard" purchased from ebay seller "speedyweboutlet" hung 5 feet from the camera/light and I am sitting about 2 feet from the camera/light.