message: Cast rgb values from C to iOS
diff: TfLiteColoredLabel cColoredLabel = cSegmentation.colored_labels[j];
  TFLColoredLabel *coloredLabel = [[TFLColoredLabel alloc] init];
  - coloredLabel.r = cColoredLabel.r;
  - coloredLabel.g = cColoredLabel.g;
  - coloredLabel.b = cColoredLabel.b;
  + coloredLabel.r = (NSUInteger)cColoredLabel.r;
  + coloredLabel.g = (NSUInteger)cColoredLabel.g;
  + coloredLabel.b = (NSUInteger)cColoredLabel.b;
  if (cColoredLabel.display_name != nil) {
  coloredLabel.displayName = [NSString stringWithCString:cColoredLabel.display_name
  