Apply VBA script, to format cells, to multiple rows and cells - excel

Question

I managed to get this code:
Sub ColorChange()
Dim ws As Worksheet
Set ws = Worksheets(2)
clrOrange = 39423
clrWhite = RGB(255, 255, 255)
If ws.Range("D19").Value = "1" And ws.Range("E19").Value = "1" Then
ws.Range("D19", "E19").Interior.Color = clrOrange
ElseIf ws.Range("D19").Value = "0" Or ws.Range("E19").Value = "0" Then
ws.Range("D19", "E19").Interior.Color = clrWhite
End If
End Sub
This works, but now I need this code to work in 50 rows and 314 cells, but every time only on two cells so, D19+E19, D20+E20, etc. Endpoint is DB314+DC314.
Is there a way, without needing to copy paste this code and replacing all the row and cells by hand?
It also would be nice that if the value in the two cells is anything other than 1+1 the cell color changes back to white.
EDIT: The solution thanks to #VBasic2008.
I added the following to the sheet's code to get the solution to work automatically:
Private Sub Worksheet_Change(ByVal Target As Range)
If Not Intersect(Target, Range("D19:DC314")) Is Nothing Then
Call ColorChange
End If
End Sub
And because Interior.Color removes borders I added the following sub:
Sub vba_borders()
Dim iRange As Range
Dim iCells As Range
Set iRange = Range("D19:DC67,D70:DC86,D89:DC124,D127:DC176,D179:DC212,D215:DC252,D255:DC291,D294:DC314")
For Each iCells In iRange
iCells.BorderAround _
LineStyle:=xlContinuous, _
Weight:=xlThin
Next iCells
End Sub
The Range is a bit different to exclude some rows.

Answer 1

Compare Values in the Two Cells of Column Pairs
Option Explicit
Sub ColorChange()
Const rgAddress As String = "D19:DC314"
Const Orange As Long = 39423
Const White As Long = 16777215
Dim wb As Workbook ' (Source) Workbook
Set wb = ThisWorkbook ' The workbook containing this code.
Dim rg As Range ' (Source) Range
Set rg = wb.Worksheets(2).Range(rgAddress) ' Rather use tab name ("Sheet2").
Dim cCount As Long ' Columns Count
cCount = rg.Columns.Count
Dim brg As Range ' Built Range
Dim rrg As Range ' Row Range
Dim crg As Range ' Two-Cell Range
Dim j As Long ' (Source)/Row Range Columns Counter
For Each rrg In rg.Rows
For j = 2 To cCount Step 2
Set crg = rrg.Cells(j - 1).Resize(, 2)
If crg.Cells(1).Value = 1 And crg.Cells(2).Value = 1 Then
If brg Is Nothing Then
Set brg = crg
Else
Set brg = Union(brg, crg)
End If
End If
Next j
Next rrg
Application.ScreenUpdating = False
rg.Interior.Color = White
If Not brg Is Nothing Then
brg.Interior.Color = Orange
End If
Application.ScreenUpdating = True
End Sub