创建一个自定义颜色IRgbColor

/// <summary>

        /// 自定义颜色

        /// </summary>

        /// <param name="r">The r.</param>

        /// <param name="g">The g.</param>

        /// <param name="b">The b.</param>

        /// <returns>IRgbColor</returns>

        /// <remarks></remarks>

        private static IRgbColor ColorCustom(int r, int g, int b)

        {

            IRgbColor myColor = new RgbColor();

            myColor.Red = r;

            myColor.Blue = b;

            myColor.Green = g;

            return myColor;

        }