update whats new for hatchcolor in collections

Author: r3kste

doc/users/next_whats_new/separated_hatchcolor.rst

@@ -61,17 +61,25 @@ Previously, hatch colors were the same as edge colors, with a fallback to
 For collections, a sequence of colors can be passed to the *hatchcolor* parameter
 which will be cycled through for each hatch, similar to *facecolor* and *edgecolor*.
 
+Previously, if *edgecolor* was not specified, the hatch color would fall back to
+:rc:`patch.edgecolor`, but the alpha value would default to **1.0**, regardless of the
+alpha value of the collection. This behavior has been changed such that, if both
+*hatchcolor* and *edgecolor* are not specified, the hatch color will fall back
+to 'patch.edgecolor' with the alpha value of the collection.
+
 .. plot::
     :include-source: true
-    :alt: A scatter plot of a quadratic function with hatches on the markers. The hatches are colored in blue, orange, and green, respectively. After the first three markers, the colors are cycled through again.
+    :alt: A random scatter plot with hatches on the markers. The hatches are colored in blue, orange, and green, respectively. After the first three markers, the colors are cycled through again.
 
     import matplotlib.pyplot as plt
     import numpy as np
 
+    np.random.seed(19680801)
+
     fig, ax = plt.subplots()
 
-    x = np.linspace(0, 1, 10)
-    y = x**2
+    x = np.random.rand(20)
+    y = np.random.rand(20)
     colors = ["blue", "orange", "green"]
 
     ax.scatter(
@@ -83,4 +91,5 @@ which will be cycled through for each hatch, similar to *facecolor* and *edgecol
         facecolor="none",
         edgecolor="black",
     )
+
     plt.show()