[matplotlib] Add named colors (from prop cycle)

.py

plt.style.use("paper")

# Name prop colors. You may need to change it to match your matplotlib style to use.
names = ["nb:blue", "nb:red", "nb:green", "nb:yellow", "nb:cyan", "nb:purple", "nb:magenta", "nb:gray"]
props = plt.rcParams["axes.prop_cycle"]
assert len(names) == len(props)

cc = plt.cm.colors.colorConverter
for name, prop in zip(names, props):
    cc.colors[name] = prop["color"]
cc.cache = {}