
Maybe the same color for the lines as the color for other borders (e.g. Button). Maybe gray and not that thick.
Currently this looks terrible if you select week or day.
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I would like to add that the today indicator looks quite bright in dark mode as well:

I close #1262 which duplicate this issue.
Here are my screen capture:
https://mycore.core-cloud.net/index.php/apps/gallery/s/G77KskCwum9deUR#
Dark mode has been vastly improved in #926


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Dark mode has been vastly improved in #926