create a bitmap image where array has more than 2GB pixels

Question

I need to create a bitmap where the size of the image can go beyond 2GB. I use:

var myPalette = new BitmapPalette(colors);
var buffer = new byte[image.ImageHeight * image.ImageWidth];

The above lines throws an exception Array dimensions exceeded supported range, when image.ImageHeight * image.ImageWidth crosses 2GB as expected. But is there any solution so that I can still get a bitmap image of expected size without losing any data? Currently, I am generating bitmap as shown below.

var colors = new List<Color> { Colors.Black, Colors.Yellow, Colors.Blue, Colors.Red, Colors.LimeGreen,Colors.Aqua};
var bitMapImage = BitmapSource.Create(width, height, 96, 96, PixelFormats.Indexed8, myPalette, buffer, width);