float hue = percentage * 125f; return Color.getHSBColor(hue, 80, 100);
float hue = (percentage) * 0.3f; return Color.getHSBColor(hue, 0.4f, 0.8f);
    protected Color computeColorOnPercentage(float percentage){    	//green's hue is 125, 100, 80    	//adjust to 0, 100, 80    	float hue = percentage * 125f;    	return Color.getHSBColor(hue, 80, 100);    }