Hi, I was able to plot a histogram for a single image as such:
from skimage import io
import matplotlib.pyplot as plt
image = io.imread('./1084_left.jpeg')

#_ = plt.hist(image.ravel(), bins = 256, color = 'orange', )
_ = plt.hist(image[:, :, 0].ravel(), bins = 256, color = 'red', alpha = 0.5)
_ = plt.hist(image[:, :, 1].ravel(), bins = 256, color = 'Green', alpha = 0.5)
_ = plt.hist(image[:, :, 2].ravel(), bins = 256, color = 'Blue', alpha = 0.5)
_ = plt.xlabel('Intensity Value')
_ = plt.ylabel('Count')
_ = plt.legend(['Total', 'Red_Channel', 'Green_Channel', 'Blue_Channel'])
plt.show()


Now, I would know like to see the color distribution of my whole datatset: one plot for all the images.
Does anyone know how to do this?