Test

Allow `outline_color` to accept an obs column #1662

Job	Run time
get-environments	7s
hatch-test.py3.14-stable	6m 26s
hatch-test.py3.14-pre (PRE-RELEASE DEPENDENCIES)	2m 29s
hatch-test.py3.11-stable	4m 42s
Tests pass in all hatch environments	5s
	13m 49s

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