Change GridView Row Color based on Date in ASP.Net

Try this

if (e.Row.RowType = DataControlRowType.DataRow)
{
    //Check your condition here
    //Get Id from here and based on Id check value in the 
    //underlying dataSource Row Where you have "Done" column Value
    // e.g.
    // (gridview.DataSource as DataTable), now you can find your row and cell 
    // of "Done"
    If(Condition True)
    {
        e.Row.BackColor = Drawing.Color.Red  // your color settings 
    }
}

example code snippet:

protected void EmployeeAvailabilityGridView_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            try
            {
               if (e.Row.RowType == DataControlRowType.DataRow)
                {                  
                    if(Convert.ToBoolean(DataBinder.Eval(e.Row.DataItem, "DONE")))
                    {
                        e.Row.BackColor = System.Drawing.Color.LightPink;
                    }
                }
            }
            catch (Exception ex)
            {
                //ErrorLabel.Text = ex.Message;
            }
        }