how to set font color of specific cell in excel using c#

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C#2.0

C#

How to set font color of specific cell that contains some data like if data contains in 1 cell as "AAAA" then its font color should change to green, and if in next row cell "BBBB" then its color should be "Yellow". I Have passed data to datagridview to excel.

Below is the code which I had tried, but I don't know what code should be given inside flower braces.

 if (datagrid.Rows[i].Cells[j].Value.ToString() == "AAAA")
{

??

}

Please help me