Look and feel

No permission needed. All fire-and-forget.

sdk.setStatusBarStyle('light')  // light icons, for dark backgrounds ('dark' for light backgrounds)
sdk.setTextSelectable(true)     // allow selecting text (off by default)
sdk.setScrollbarVisible(true)   // show scrollbars (hidden by default)

Re-apply setStatusBarStyle when the theme changes if your colours depend on it.