Diagram in blue color only

[tmelorc]

The following code from Usage section

import numpy as np
from ripser import Rips

rips = Rips()
data = np.random.random((100,2))
diagrams = rips.fit_transform(data)
rips.plot(diagrams)

does not show the plot. But yes if using rips.plot(diagrams, show=True).

Also, both bullets in diagram are in blue color, as in the image:

Any idea why? Maybe bug or matplotlib problems?