Panel changing color with third-party theme and "Auto hide panel w bookmarks" enabled

[Admini]

Thank you, i've enabled "#top-chrome-touch-ui" in flags, it looks good now.

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1) no, it caused another problem, space between icon has been increased as well. so I disabled flag "#top-chrome-touch-ui"
i've tried to enable/disable command line "--cb-compact-ui", it didn't help.




2) by the way, would you please suggest, how to change the font size of the tabs.

This inherits system settings.
You can change it with this tool:
https://github.com/Tatsu-syo/noMeiryoUI/releases
We have not tested, maybe "Title bar" is the target option.