#import <COSTouchVisualizerWindow.h>
...
// Add this method to your AppDelegate method
- (COSTouchVisualizerWindow *)window {
    static COSTouchVisualizerWindow *visWindow = nil;
    if (!visWindow) visWindow = [[COSTouchVisualizerWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    return visWindow;
}

#import <COSTouchVisualizerWindow.h>
...
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Setup window
    self.window = [[COSTouchVisualizerWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    ...
}

- (BOOL)touchVisualizerWindowShouldShowFingertip:(COSTouchVisualizerWindow *)window;
- (BOOL)touchVisualizerWindowShouldAlwaysShowFingertip:(COSTouchVisualizerWindow *)window;

- (COSTouchVisualizerWindow *)window {
  if (!_customWindow) {
    _customWindow = [[COSTouchVisualizerWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // ... other setup code
    _customWindow.touchVisualizerWindowDelegate = self;
  }
  return _customWindow;
}
- (BOOL)touchVisualizerWindowShouldAlwaysShowFingertip:(COSTouchVisualizerWindow *)window {
    return YES;  // Return YES to make the fingertip always display even if there's no any mirrored screen.
                 // Return NO or don't implement this method if you want to keep the fingertip display only when
                 // the device is connected to a mirrored screen.
}
- (BOOL)touchVisualizerWindowShouldShowFingertip:(COSTouchVisualizerWindow *)window {
    return YES;  // Return YES or don't implement this method to make this window show fingertip when necessary.
                 // Return NO to make this window not to show fingertip.
}

// Add these lines after the windows is initialized
// Touch Color
[visWindow setFillColor:[UIColor yellowColor]];
[visWindow setStrokeColor:[UIColor purpleColor]];
[visWindow setTouchAlpha:0.4];
// Ripple Color
[visWindow setRippleFillColor:[UIColor yellowColor]];
[visWindow setRippleStrokeColor:[UIColor purpleColor]];
[visWindow setRippleAlpha:0.1];