FillLayer.ReplaceNonTransparentColors

public override void ReplaceNonTransparentColors(int newColorArgb)

[C#]

using (PsdImage image = (PsdImage)Image.Load("cub16bit_cmyk.psd"))
{
    RasterCachedImage raster = image.Layers[0];
    Aspose.PSD.Graphics graphics = new Graphics(raster);
    int width = raster.Width;
    int height = raster.Height;
    Rectangle rect = new Rectangle(width / 3, height / 3, width - (2 * (width / 3)) - 1, height - (2 * (height / 3)) - 1);
    graphics.DrawRectangle(new Aspose.PSD.Pen(Color.DarkGray, 1), rect);
    image.Save("output.psd");
    image.Save("output.png", new PngOptions());
}