import cosmoplotian
import numpy as np
import matplotlib.pyplot as plt
fig, axes = plt.subplots(figsize=(6, 0.3), dpi=100, sharey=True)
fig.subplots_adjust(
    wspace=0, right=0.99, top=0.99, bottom=0.00, left=0.01, hspace=0.0
)
plt.yticks([])
arr = np.tile(np.arange(1000), 100).reshape(100, 1000)
plt.imshow(arr, cmap='div yel grn')