How to set scroll bar's color of IonContent for dark mode?

Hi.
I’d like to make the color of the scroll bar in IonContent to be black (at least dark) in dark mode because contents are bright.
However, in dark mode, the scroll bar of the IonContent is always white.

I set the meta tag of the color-scheme to be light to make my app just as same as in the light mode although the user set the device in dark mode. But it didn’t work.

<meta name="color-scheme" content="light" />

What should I do?
Please give some help.
Thanks.

Having the same issue with Ionic Vue, was there any solution for this?

Lost a whole day trying to override classes and even setting the style of the iOS webWiew.scrollView.indicatorStyle, all with no luck.

Figured it out after a ridiculous amount of time.

In the iOS AppDelegate.swift file use the following:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    if #available(iOS 13.0, *) {
      // Always adopt a light interface style.
      window?.overrideUserInterfaceStyle = .light
    }
    
    return true
  }