input: Write a python function to create a 3x3x3 cube filled with random colors from a predefined list and print it.
  assert isinstance(create_random_cube(), list)
output: import random
  
  def create_random_cube():
      colors = ["red", "green", "blue", "yellow", "orange", "purple", "white", "black"]
      cube = [[[random.choice(colors) for _ in range(3)] for _ in range(3)] for _ in range(3)]
      for layer in cube:
          for row in layer:
              print(row)
          print()
      return cube