code: public static Color lerp(Color a, Color b, float percent) {
          int red = (int) lerp(a.getRed(), b.getRed(), percent);
          int blue = (int) lerp(a.getBlue(), b.getBlue(), percent);
          int green = (int) lerp(a.getGreen(), b.getGreen(), percent);
          int alpha = (int) lerp(a.getAlpha(), b.getAlpha(), percent);
          return new Color(red, green, blue, alpha);
      }
docs: Calculates the linear interpolation between a and b with the given percent
  
  @param a The first know value
  @param b The second know value
  @param percent The percent
  @return Color