Where to find the setting the use system colors?

In the changelog to Version 63, a setting to use system colors on Android 12 is described.
I am on Android 12 but can’t find that setting. Under Appearance, there’s still only the format of Episode numbers and the setting to choose between dark and light mode.

Sorry, in that case your device does not support using system colors (or at least the check Google has integrated says so)!