DOC: Add 'What's New' entry for 6 and 8 Petorff color cycles

matthewfeickert · matthewfeickert · commit b89e4ced8cbb · 2025-05-18T01:45:24.000-06:00
* Note the addition of 'petroff6' and 'petroff8' and give an example
  of how to load them.
diff --git a/doc/users/next_whats_new/six_and_eight_color_petroff_color_cycles.rst b/doc/users/next_whats_new/six_and_eight_color_petroff_color_cycles.rst
@@ -0,0 +1,21 @@
+Six and eight color Petroff color cycles
+----------------------------------------
+
+The six and eight color accessible Petroff color cycles are named 'petroff6' and
+'petroff8'.
+They compliment the existing 'petroff10' color cycle, added in `Matplotlib 3.10.0`_
+
+For more details see
+`Petroff, M. A.: "Accessible Color Sequences for Data Visualization"
+<https://arxiv.org/abs/2107.02270>`_.
+To load the 'petroff6' color cycle in place of the default::
+
+  import matplotlib.pyplot as plt
+  plt.style.use('petroff6')
+
+or to load the 'petroff8' color cycle::
+
+  import matplotlib.pyplot as plt
+  plt.style.use('petroff8')
+
+.. _Matplotlib 3.10.0: https://matplotlib.org/stable/users/prev_whats_new/whats_new_3.10.0.html#new-more-accessible-color-cycle
