Is it possible to duplicate the home indicator look? Specifically, the color of the home indicator changes depending on the color of whatever is behind it so that it is always visible. Is there a public method that can be used to duplicate this behavior? My use case is to show a boundary lines matching a polygon selected by the user over an image, so to make it visible for all images, it would be great if it could be a different color than the image. The trick is that it will vary unpredictably by image.
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