Fix comment about color depth. (#609) #1729

Job	Run time
change-detection / Identify source changes	7s
rr-tests / Action	14s
cookie / Format	3m 33s
cookie / Distribution build	3m 38s
rr-tests / Check Python 3.10 on ubuntu-latest	21s
rr-tests / Check Python 3.11 on macos-14	20s
rr-tests / Check Python 3.10 on windows-latest	32s
rr-tests / Check Python 3.11 on windows-latest	31s
rr-tests / Check Python 3.12 on macos-14	24s
rr-tests / Check Python 3.12 on ubuntu-latest	26s
rr-tests / Check Python 3.10 on macos-14	44s
rr-tests / Check Python 3.11 on ubuntu-latest	18s
rr-tests / Check Python 3.13 on macos-14	21s
rr-tests / Check Python 3.13 on windows-latest	33s
rr-tests / Check Python 3.12 on windows-latest	44s
cookie / Check Python 3.9 on windows-latest	4m 57s
rr-tests / Check Python 3.13 on ubuntu-latest	19s
cookie / Check Python 3.9 on ubuntu-latest	2m 22s
cookie / Check Python 3.9 on macos-latest	2m 40s
cookie / Check Python 3.13 on ubuntu-latest	2m 27s
cookie / Check Python 3.13 on macos-latest	1m 42s
cookie / Check Python pypy-3.10 on ubuntu-latest	3m 22s
cookie / Check Python 3.13 on windows-latest	4m 42s
rr-tests / Run pylint	14s
rr-tests / Run cog on README	10s
cookie / Check included Noxfile	4m 18s
cookie / pass	5s
pass	4s
	40m 8s

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