In [ ]:
from PIL import Image

import matplotlib.pyplot as plt
from itertools import product

In [ ]:
for red, green, blue in product(range(0, 255, 100), range(0, 255, 100), range(0, 255, 100)):
    im = Image.new(mode='RGB', size=(64, 64), color=(red, green, blue))
    plt.imshow(im)
    plt.show()