//your code here...The following code snippet shows how to add text with transparent color. //C# Code Sample // create Document instance Document doc = new Document(); // create page to pages collection of PDF file Aspose.Pdf.Page page = doc.Pages.Add(); // create Graph object Aspose.Pdf.Drawing.Graph canvas = new Aspose.Pdf.Drawing.Graph(100, 400); // create rectangle instance with certain dimensions Aspose.Pdf.Drawing.Rectangle rect = new Aspose.Pdf.Drawing.Rectangle(100, 100, 400, 400); // create color object from Alpha color channel rect.GraphInfo.FillColor = Aspose.Pdf.Color.FromRgb(System.Drawing.Color.FromArgb(128, System.Drawing.Color.FromArgb(12957183))); // add rectanlge to shapes collection of Graph object canvas.Shapes.Add(rect); // add graph object to paragraphs collection of page object page.Paragraphs.Add(canvas); // set value to not change position for graph object canvas.IsChangePosition = false; // create TextFragment instance with sample value TextFragment text = new TextFragment("transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text "); // create color object from Alpha channel Aspose.Pdf.Color color = Aspose.Pdf.Color.FromArgb(30, 0, 255, 0); // set color information for text instance text.TextState.ForegroundColor = color; // add text to paragraphs collection of page instance page.Paragraphs.Add(text); // save PDF file doc.Save("c:/Transparent_Text.pdf"); //VB.NET Code Sample ' create Document instance Dim doc As Document = New Document() ' create page to pages collection of PDF file Dim page As Aspose.Pdf.Page = doc.Pages.Add() ' create Graph object Dim canvas As Aspose.Pdf.Drawing.Graph = New Aspose.Pdf.Drawing.Graph(100, 400) ' create rectangle instance with certain dimensions Dim rect As Aspose.Pdf.Drawing.Rectangle = New Aspose.Pdf.Drawing.Rectangle(100, 100, 400, 400) ' create color object from Alpha color channel rect.GraphInfo.FillColor = Aspose.Pdf.Color.FromRgb(System.Drawing.Color.FromArgb(128, System.Drawing.Color.FromArgb(12957183))) ' add rectanlge to shapes collection of Graph object canvas.Shapes.Add(rect) ' add graph object to paragraphs collection of page object page.Paragraphs.Add(canvas) ' set value to not change position for graph object canvas.IsChangePosition = False ' create TextFragment instance with sample value Dim text As Aspose.Pdf.Text.TextFragment = New TextFragment("transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text transparent text ") ' create color object from Alpha channel Dim color As Aspose.Pdf.Color = Aspose.Pdf.Color.FromArgb(30, 0, 255, 0) ' set color information for text instance Text.TextState.ForegroundColor = color ' add text to paragraphs collection of page instance page.Paragraphs.Add(Text) ' save PDF file doc.Save("c:/Transparent_Text.pdf")