Change the font color in a cell based on the value in another cell - excel

Question

I would like to change the color of certain text in the cells based on the values in another cells. I have tried using conditional formatting but it does not work since I only wanted to change the color of particular words in the cells. I have googled a few VBA codes as well but still could not find the right one. Is there any VBA Code to enable this?
As shown in the example below (see image), I want to highlight ONLY the dates in Column B and C that match the dates in Column G. The day should remain the same.
For information, the values in Column B and C are formatted as text and the values in G are formatted as date.
Before
and this is basically what I wish for.
After

Answer 1

I have modified code appropriately as per your requirement in the comment.
Sub Change_Text_Color()
Dim Find_Text, Cell, Cell_in_Col_G, LastCell_inColG As Range
Dim StartChar, CharLen, LastUsedRow_inRange, LastUsedRow_inColB, _
LastUsedRow_inColC As Integer
LastUsedRow_inColB = Sheet1.Cells(Rows.count, "B").End(xlUp).Row
LastUsedRow_inColC = Sheet1.Cells(Rows.count, "C").End(xlUp).Row
LastUsedRow_inRange = Application.WorksheetFunction. _
Max(LastUsedRow_inColB, LastUsedRow_inColC)
Set LastCell_inColG = Sheet1.Cells(Rows.count, "G").End(xlUp)
For Each Cell In Range(Sheet1.Cells(2, 2), Cells(LastUsedRow_inRange, 3))
For Each Cell_in_Col_G In Range(Sheet1.Cells(2, 7), LastCell_inColG)
CharLen = Len(Cell_in_Col_G.Text)
Set Find_Text = Cell.Find(what:=Cell_in_Col_G.Text)
If Not Find_Text Is Nothing Then
StartChar = InStr(Cell.Value, Cell_in_Col_G.Text)
With Cell.Characters(StartChar, CharLen)
.Font.Color = RGB(0, 255, 0)
End With
End If
Next
Next
End Sub
Please let me know your feedback on it.

Answer 2

Use Characters:
With Range("a1")
.Characters(Start:=1, Length:=4).Font.Color=0
.Characters(Start:=5, Length:=10.Font.Color=255
End With
colours the first four letters black and the next ten in red.
Ref:
https://learn.microsoft.com/en-us/office/vba/api/excel.characters

Answer 3

I find filtering works well in these scenarios. Assuming that the format of your sheet is as it is in your sample sheets, try the code below:
Sub MarkDatesInCells()
Dim oWS As Worksheet: Set oWS = ThisWorkbook.Worksheets("Sheet3") '<- Change to the sheet name
Dim iLRToHighlight As Long, iStartChar As Long, iC As Long, iLR As Long
Dim oHighlightRng As Range, oUpdateRng As Range, oRng As Range
Dim sColName As String
' Turn off updating
Application.ScreenUpdating = False
Application.EnableEvents = False
With oWS
' Clear autofilter if exists
If .AutoFilterMode Then .AutoFilterMode = False
' Loop through all values specified in column G
iLRToHighlight = .Range("G" & .Rows.Count).End(xlUp).Row
For Each oHighlightRng In .Range("G2:G" & iLRToHighlight)
' Loop through column B and C
For iC = 2 To 3
' Set autofilter based on the value in column G
.UsedRange.AutoFilter iC, "=*" & oHighlightRng.Value
' Loop through all visible rows
iLR = .Cells(.Rows.Count, iC).End(xlUp).Row
If iLR > 1 Then
sColName = Left(Replace(.Cells(1, iC).Address, "$", ""), 1)
Set oUpdateRng = .Range(sColName & "2:" & sColName & iLR).SpecialCells(xlCellTypeVisible)
' Update each cell text
For Each oRng In oUpdateRng
iStartChar = InStr(1, oRng.Value, "- ", vbTextCompare) + 2
oRng.Characters(Start:=iStartChar, Length:=Len(oHighlightRng.Value)).Font.Color = 255
Next
End If
.AutoFilterMode = False
Next
Next
End With
' Turn on updating
Application.ScreenUpdating = True
Application.EnableEvents = True
End Sub
EDIT
Based on your requirement to have this solution for a sheet with a table connected to a database, try the below code. I don't have a database that I can test the below code on so you might have to tinker with it a bit to get it right (i.e. the text that is highlight)
Sub MarkDatesInCellsInATable()
Dim oWS As Worksheet: Set oWS = ThisWorkbook.Worksheets("Sheet4") '<- Change to the sheet name
Dim iLRToHighlight As Long, iStartChar As Long, iC As Long, iLR As Long
Dim oHighlightRng As Range, oUpdateRng As Range, oRng As Range
Dim sColName As String
Dim oTable As ListObject: Set oTable = oWS.ListObjects("Table_ExceptionDetails.accdb") '<- Change to the table name
Application.ScreenUpdating = False
Application.EnableEvents = False
With oWS
' Reset autofilter
oTable.Range.AutoFilter
' Loop through all values specified in column G
iLRToHighlight = .Range("G" & .Rows.Count).End(xlUp).Row
For Each oHighlightRng In .Range("G2:G" & iLRToHighlight)
' Loop through column B and C
For iC = 2 To 3
' Set autofilter based on the value in column G
oTable.Range.AutoFilter iC, "=*" & oHighlightRng.Value & "*"
' Loop through all visible rows
iLR = .Cells(.Rows.Count, iC).End(xlUp).Row
If iLR > 1 Then
sColName = Left(Replace(.Cells(1, iC).Address, "$", ""), 1)
Set oUpdateRng = .Range(sColName & "2:" & sColName & iLR).SpecialCells(xlCellTypeVisible)
' Update each cell text
For Each oRng In oUpdateRng
iStartChar = InStr(1, oRng.Value, "- ", vbTextCompare) + 2
oRng.Characters(Start:=iStartChar, Length:=Len(oHighlightRng.Value)).Font.Color = 255
Next
End If
oTable.Range.AutoFilter
Next
Next
End With
Application.ScreenUpdating = True
Application.EnableEvents = True
End Sub