ENH: add petroff10 to the sequence registry

Author: tacaswell

lib/matplotlib/_cm.py

@@ -1366,6 +1366,20 @@ def _gist_yarg(x): return 1 - x
 )
 
 
+_petroff10_data = (
+    (0.24705882352941178, 0.5647058823529412,  0.8549019607843137),    # 3f90da
+    (1.0,                 0.6627450980392157,  0.054901960784313725),  # ffa90e
+    (0.7411764705882353,  0.12156862745098039, 0.00392156862745098),   # bd1f01
+    (0.5803921568627451,  0.6431372549019608,  0.6352941176470588),    # 94a4a2
+    (0.5137254901960784,  0.17647058823529413, 0.7137254901960784),    # 832db6
+    (0.6627450980392157,  0.4196078431372549,  0.34901960784313724),   # a96b59
+    (0.9058823529411765,  0.38823529411764707, 0.0),                   # e76300
+    (0.7254901960784313,  0.6745098039215687,  0.4392156862745098),    # b9ac70
+    (0.44313725490196076, 0.4588235294117647,  0.5058823529411764),    # 717581
+    (0.5725490196078431,  0.8549019607843137,  0.8666666666666667),    # 92dadd
+)
+
+
 datad = {
     'Blues': _Blues_data,
     'BrBG': _BrBG_data,

lib/matplotlib/colors.py

@@ -129,6 +129,7 @@ class ColorSequenceRegistry(Mapping):
         'Set1': _cm._Set1_data,
         'Set2': _cm._Set2_data,
         'Set3': _cm._Set3_data,
+        'petroff10': _cm._petroff10_data,
     }
 
     def __init__(self):