VBA Conditional Format Range Of Cells Based Upon Criteria In One Cell / Repeat For All Rows

Code is trying to

1. Where there is data in column B
2. Goto first row of data
2. If column J = "Closed"
3. then select Cells from column B to J in that row and colour these cells in red
4. If column J= "Open"
5. the select Celss from column B to J in that row and colour these cells in grey
4. Repeat for next row until you get to cell in column B where there is no data.

Recieve run time error 1004: Method 'RAnge of object_GLobal failed

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Sub Colourclosed()
Sheets("Risks").Select
Dim LastRow As Long
Dim i As Long
LastRow = Range("B" & Rows.Count).End(xlUp).Row
For i = 8 To LastRow
If Range("J" & i).Value = "Closed" Then Range("B", "J" & i).Select
Selection.Interior.ColorIndex = 3

[code].....

Note: I've managed to do it for one cell ie for Column B by replacing "If Range("J" & i).Value = "Closed" Then Range("B", "J" & i).Select with "If Range("J" & i).Value = "Closed" Then Range("B" & i).Select" This works but only colours in cell in column B, how do i do this so it colours range of cells