IntelliJ - custom themes for light and dark system theme?

In IntelliJ's PyCharm 2024, when I set Theme -> Sync with OS, it switches from my (astonishingly beautiful) custom theme to the (dare I say, bland) default Light theme.

Is there a way to specify my own themes for light and dark system modes?

Solution

In Settings, "Appearance & Behaviour | Appearance" go to "Gear" near "Sync with OS", and select the preferred theme and Editor color scheme for both Dark and Light system modes separately.

Available only in the 2023.3+ version; update if you don't see the gear.