}

        private static int redComponent(double confidencePercentage) {
            return confidencePercentage > 0 ? 255 : 0;
        }

        private static int greenComponent(double confidencePercentage) {
            return confidencePercentage < 0 ? 255 : 0;
        }

        private BackgroundColor(double index, int redComponent, int greenComponent, double opacity) {