refactor: indent-bars-color #1544

Job	Run time
test (ubuntu-latest, 27.2, false)	1m 1s
test (ubuntu-latest, 28.2, false)	1m 51s
test (ubuntu-latest, 29.4, false)	3m 37s
test (macos-latest, 27.2, false)	1m 5s
test (macos-latest, 28.2, false)	1m 45s
test (macos-latest, 29.4, false)	3m 57s
test (windows-latest, 27.2, false)	1m 13s
test (windows-latest, 28.2, false)	1m 54s
test (windows-latest, 29.4, false)	3m 54s
test (ubuntu-latest, snapshot, true)	3m 14s
test (macos-latest, snapshot, true)	3m 18s
test (windows-latest, snapshot, true)	3m 14s
	30m 3s

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