Add `Color` enum - #20

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Helveg wants to merge 4 commits into

FedericoCeratto:mainfrom

Commits on Mar 22, 2024

more py2
Helveg
committed
8038964
change `Color` to an `Enum` for human readable labels, still accept ints
Helveg
committed
d9801e6
use an abstract base class to enforce `_display` interface
Helveg
committed
60d5981
use intenum
Helveg
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32f1dec