How to work witH transparency of an XPS file is a question answered by Aspose.Page API solution. See How to use tHe functionality in .NET...CreatePathGeometry ( "M300,120 h600 V420 h-600" )). Fill = doc. CreateSolidColorBrus...CreatePathGeometry ( "M20,20 h200 v200 h-200 z" )); 14 // Set blue solid...