Hi Sravan,
Thank you for your interest in Syncfusion products.
I am afraid I am unable to reproduce the issue. I was able to set the backcolor of gridcontrol to the backcolor of the table generated in the word document. I created a datatable with two rows and two columns. I applied the backcolor of the gridcontrol to the column of the datatable and I was able to apply the backcolor.This can be achived by using the following code snippet;
[C#]
row_0.Cells[0].CellFormat.BackColor = Color.FromArgb(this.gridControl1[1, 1].BackColor.ToArgb());
Here is the sample for your reference.
http://websamples.syncfusion.com/samples/DocIo.Windows/F-64389/main.htmPlease let me know for further help.
Regards,
Sarath