make it so that pressing the button turns the lights off and letting go turns it off.

CPX__buttonA__ELSE.py

"""
Here, we'll use the button to light up all the neopixels
"""

# --------------------------
from adafruit_circuitplayground import cp
# --------------------------

# --------------------------
while True:
    # light up the neopixels
    # if we press button a
    if cp.button_a: 
        cp.pixels.fill((255,255,255))
    else:
        # if the button is not pressed (else) turn them off
        # the fill being "0" is equivalent to "off"
        cp.pixels.fill((0, 0, 0))
# --------------------------