[Python] seaborn ignores custom color palette when number of patches exceeds number of colors

I set up a palette containing just black and gray as follows.

import seaborn as sns
sns.set_palette(['#000000', '#ABABAB'])


This works fine if I just have two or less patches in my plot.

sns.barplot([1, 2], [3, 4])




However, when I have more bars than colors, seaborn switches back to the default palette.

sns.barplot([1, 2, 3], [4, 5, 6])




Can I make seaborn cycle through my custom color palette? In the case above, the first bar should be black, the second grey and the third one black again.

My current workaround is

sns.set_palette(['#000000', '#ABABAB']*1000)


but I doubt this is the standard way to do it.

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