Import the Chromatography class, instantiate it (via a path to an image or PIL Image object), use the get_palette or get_highlights methods to get what you want.
from chromatography import Chromatography
palette = Chromatography("image.jpg").get_palette(5)
or...
from PIL import Image
from chromatography import Chromatography
img = Image("image.jpg")
palette = Chromatography(img).get_palette(5)
For example, image/palette:
