For 100% polyester fabrics use 1.5 lb. of dye per 100 lbs. of fabric (1.5% OWG) to get medium shades. (With black, you are going to get more of a charcoal grey with this product.) That would be 6 - 4 oz packets, so 3 for 50 lbs. of fabric, etc.
XML data type was introduced in SQL Server 2005. This type allows you to store XML data up to 2 GB. Here is a small example of, pretty much self-explanatory.
XML Format Files (SQL Server) SQL Server 2016 provides an XML schema that defines syntax for writing XML format files to use for bulk importing data into a SQL Server table. XML format files must adhere to this schema, which is defined in the XML Schema Definition Language (XSDL). XML format files are only supported when SQL Server tools are installed together with SQL Server Native Client. You can use an XML format file with a bcp command, BULK INSERT statement, or INSERT ...