code: def highlight_threshold(image, img_data, threshold, color=(255, 0, 0)):
      
      out_pixels = list(image)
      for i in range(len(image)):
          p, e = image[i], img_data[i]
          if e > threshold:
              out_pixels[i] = color
      return out_pixels
docs: Given an array of values for an image, highlights pixels whose value is greater than the given threshold.
      :param image: The image to highlight
      :param img_data: The values to use
      :param threshold: The threshold above which pixels should the highlighted
      :param color: The color to highlight pixels with
      :return: The image, with high-value pixels highlighted