Compare Worksheets And Mark Differences

I am trying to compare two worksheets and report the differences (data added or changed in the second, not necessarily data removed in the second). Afterwords I want to color code the third spreadsheet for if the whole row was added that it would make that whole row a different color and if one column in the row was changed that one column would change colors. Currently I am stumped on this, I tried searching the forums and found something that I made it to do the first part.

Sub test()
Dim a, b(), i As Long, ii As Long, n As Long, nn As Long, fa As Long
Dim z As String, zz As String
a = Sheets("sheet1").Range("a1").CurrentRegion.Resize(, 8).Value
With CreateObject("Scripting.Dictionary")
.CompareMode = vbTextCompare
For i = 2 To UBound(a, 1)
z = "": zz = ""
For ii = 1 To UBound(a, 2)
z = z & ";" & a(i, ii)
Next
zz = a(i, 5) & ";" & a(i, 6)
.Item(z) = i: .Item(zz) = i
Next .............................