Help ow to do this
You need to use the BackColor property while generating the barcode using GetBarcodeGenerate to set the background color of a barcode. Please check the sample cURL command for reference.
curl -X GET "https://api.aspose.cloud/v3.0/barcode/generate?Type=QR&Text=Aspose.BarCode%20Cloud&BackColor=Green"
-H "accept: image/png"
-H "authorization: Bearer [Access_Token]"
-H "x-aspose-client: Containerize.Swagger"