If you wish to change the background colour of the row then
Sheets("sheet1").Cells.Range("a53").EntireRow.Interior.ColorIndex = 6
this makes all row53 yellow
Sheets("sheet1").Cells.Range("a50:j50").Interior.ColorIndex = 6
This makes the range quoted yellow
but more use to you I think will be the one below, or some mod of it, which makes the row of the active cell yellow
ActiveCell.EntireRow.Interior.ColorIndex = 6
Brian