concatenate vba excel keep format - excel

Question

I am building on some code, partly cut and paste from other posts. I need to concatenate with a VBA code keeping the format and running through rows to output in last cell in each row. (Can't paste image) so hope description is clear:
In A1:D1 values are RED,BLUE,GREEN
In A2:D2 Values are YELLOW,PURPLE,ORANGE
OUTPUT IN E1 should concatenate these values, keeping font colour. Each value should have "ALT ENTR" to give line break.
Next row should be displayed in E2, and so on
'************************************************************************************
Sub test()
Dim rng As Range: Set rng = Application.Range("a1:c1") 'Not yet looping
Dim row As Range
For Each row In rng.Rows
'Debug.Print col.Column
Call concatenate_cells_formats(Cells(1, 4), rng) 'Not yet looping
Next row
End Sub
Sub concatenate_cells_formats(cell As Range, source As Range)
'Anon
Dim c As Range
Dim i As Integer
i = 1
With cell
.Value = vbNullString
.ClearFormats
For Each c In source
.Value = .Value & " " & Trim(c)
Next c
.Value = Trim(.Value)
For Each c In source
With .Characters(Start:=i, Length:=Len(Trim(c))).Font
.Name = c.Font.Name
.FontStyle = c.Font.FontStyle
.Size = c.Font.Size
.Strikethrough = c.Font.Strikethrough
.Superscript = c.Font.Superscript
.Subscript = c.Font.Subscript
.OutlineFont = c.Font.OutlineFont
.Shadow = c.Font.Shadow
.Underline = c.Font.Underline
.ColorIndex = c.Font.ColorIndex
End With
.Characters(Start:=i + Len(c), Length:=1).Font.Size = 1
i = i + Len(Trim(c)) + 1
Next c
End With
End Sub
'*****************************************************************************

Answer 1

Option Explicit
Sub concColour()
Dim i As Long, j As Long, s As Long, l As Long, clr As Long, vals As Variant
With Worksheets("sheet4")
For i = 1 To .Cells(.Rows.Count, "A").End(xlUp).Row
vals = Application.Transpose(Application.Transpose(Intersect(.Range("A:D"), .Rows(i)).Value2))
.Cells(i, "E") = Join(vals, vbLf)
s = 1
For j = LBound(vals) To UBound(vals)
l = Len(vals(j))
clr = .Cells(i, "A").Offset(0, j - 1).Font.Color
With .Cells(i, "E").Characters(Start:=s, Length:=l).Font
.Color = clr
End With
s = s + l + 1
Next j
.Cells(i, "E").Font.Size = 4
Next i
End With
End Sub
enter image description here

Answer 2

I think you require something like this. Change source font and formats as per your requirement.
Sub Adding_T()
Dim lena As Integer
Dim lenc As Integer
Dim lend As Integer
Dim lene As Integer
Dim LastRow As Long
Dim nrow As Long
With Worksheets("Sheet2") 'Change sheet as per your requirement
LastRow = .Cells(.Rows.Count, "A").End(xlUp).row
For nrow = 1 To LastRow
.Range("E" & nrow) = .Range("A" & nrow).Value2 & Chr(13) & Chr(10) & .Range("B" & nrow).Value2 & _
Chr(13) & Chr(10) & .Range("C" & nrow).Value2 & Chr(13) & Chr(10) & .Range("D" & nrow).Value2
lena = Len(.Range("A" & nrow).Value2)
lenc = lena + 2 + Len(.Range("B" & nrow).Value2)
lend = lenc + 2 + Len(.Range("C" & nrow).Value2)
lene = lend + 2 + Len(.Range("D" & nrow).Value2)
For i = 1 To lena
.Range("E" & nrow).Characters(Start:=i, Length:=1).Font.Color = _
.Range("A" & nrow).Characters(Start:=i, Length:=1).Font.Color
Next i
For i = lena + 2 To lenc
.Range("E" & nrow).Characters(Start:=i, Length:=1).Font.Color = _
.Range("B" & nrow).Characters(Start:=i, Length:=1).Font.Color
Next i
For i = lenc + 2 To lend
.Range("E" & nrow).Characters(Start:=i, Length:=1).Font.Color = _
.Range("C" & nrow).Characters(Start:=i, Length:=1).Font.Color
Next i
For i = lend + 2 To lene
.Range("E" & nrow).Characters(Start:=i, Length:=1).Font.Color = _
.Range("D" & nrow).Characters(Start:=i, Length:=1).Font.Color
Next i
Next
End With
End Sub
Snapshot of trial:
EDIT: OP Preferred code does not permit looping through the Range. Amended his Sub Test() to allow looping through the range.
Sub Test2()
Dim ws As Worksheet
Dim LastRow As Long
Set ws = ThisWorkbook.ActiveSheet
Dim rng As Range
Dim row As Range
Dim rw As Long
LastRow = ws.Cells(Rows.Count, "A").End(xlUp).row
rw = 1
For rw = 1 To LastRow
Set rng = ws.Range("A" & rw & ":C" & rw)
Call concatenate_cells_formats(Cells(rw, 4), rng)
Next
End Sub
Results are as per snapshot appended here.