Increase Speed Of Macro: Match In Font Color It Will Fill The Top With Orange And Delete The Bottom

My macro works fine but I'm interested in seeing if I can speed it up. What I'm doing is starting at the bottom and comparing it with the row above and if they match in font color it will fill the top with orange and delete the bottom. This works but usually takes several minutes.

Public Sub ADMINCompareList()
Dim varTest1, varTest2
Dim lng As Long, i As Integer, iTest As Integer
Application. ScreenUpdating = False
Worksheets("ADMIN").Activate
For lng = ActiveSheet.UsedRange.Rows.Count To 2 Step -1
If Not Range("M" & lng).Font.Color <> Range("M" & lng - 1).Font.Color Then
Goto newrow
End If
varTest1 = Intersect(Range("J:W"), Rows(lng))
varTest2 = Intersect(Range("J:W"), Rows(lng - 1))
For i = 1 To 14....................................