versatileimagefield/versatileimagefield.py
def process_image(self, image, image_format, save_kwargs={}):
        """Return a BytesIO instance of `image` with inverted colors."""
        imagefile = BytesIO()
        inv_image = ImageOps.invert(image)
        inv_image.save(
            imagefile,
            **save_kwargs
        )
        return imagefile
def process_image(self, image, image_format, save_kwargs={}):
        """Return a BytesIO instance of `image` with inverted colors."""
        imagefile = BytesIO()
        inv_image = ImageOps.invert(image)
        inv_image.save(
            imagefile,
            **save_kwargs
        )
        return imagefile
Return a BytesIO instance of `image` with inverted colors.