Hi Rudy,

To mark non editable type with a different color in specific cell, you have to set the cell to non editable in code behind by setting ForceNoEdit to true in the cell. Please take a look at the snippet code bellow : 

protected void WebGrid1_InitializeRow(object sender, ISNet.WebUI.WebGrid.RowEventArgs e)
    {
        e.Row.Cells.GetNamedItem("CategoryID").ForceNoEdit = true; 
        // you can validate which cells that you want to set in true or false.
        if (e.Row.Cells.GetNamedItem("CategoryID").ForceNoEdit == true)
        {
            e.Row.Cells.GetNamedItem("CategoryID").Style.BackColor = System.Drawing.Color.SkyBlue;
        }
        
    }

For your information, you should not set edit type in WebGrid.NET designer if you want to get a cell, because EditType in WebGrid.NET designer is define a column not a cell.

Hope this helps.
Riendy