Changing the colors of the specific dots in scatterplot vba excel

Question

I would like to change the color of dots in top left part of the scatterplot. I wrote a macro, no errors occurred but the color did not change :/

Sub Kolorowanie()
ActiveSheet.ChartObjects("Chart 1").Activate
a = ActiveChart.SeriesCollection(1).Values
b = ActiveChart.SeriesCollection(1).XValues

For i = LBound(a) To UBound(a)

If a(i) < 0 And b(i) > 0 Then
  ActiveSheet.ChartObjects("Chart 1").Activate
  ActiveChart.SeriesCollection(1).Select
  ActiveChart.SeriesCollection(1).Points(i).Select
   With Selection.Format.Fill
    .Visible = msoTrue
    .ForeColor.RGB = RGB(255, 0, 0)
    .Solid
   End With

Else
End If
Next i
End Sub

Any ideas why it does not work?

Solution

Get rid of the .Solid or put this before you set the Forecolor.RGB, I think that is overriding something (I have noticed this and some other bugs/inabilities to perform certain actions even as the Macro Recorder would make it seem these methods should work properly).

Option Explicit
Sub Kolorowanie()
Dim cht As Chart
Dim srs As Series
Dim pt As Point

Set cht = ActiveSheet.ChartObjects(1).Chart

Set srs = cht.SeriesCollection(1)

For Each pt In srs.Points
    With pt.Format.Fill
        .Visible = msoTrue
        '.Solid  'I commented this out, but you can un-comment and it should still work
        .ForeColor.RGB = RGB(255, 0, 0)

    End With
Next


End Sub

Or:

For Each pt In srs.Points
With pt.Format.Fill
    .Visible = msoTrue
    .Solid  'This is the default so including it doesn't do anything, but it should work either way.
    .ForeColor.RGB = RGB(255, 0, 0)

End With
Next

Applying this to your code gives us:

Sub Kolorowanie()
ActiveSheet.ChartObjects("Chart 1").Activate
a = ActiveChart.SeriesCollection(1).Values
b = ActiveChart.SeriesCollection(1).XValues

For i = LBound(a) To UBound(a)

If a(i) < 0 And b(i) > 0 Then
   ActiveSheet.ChartObjects("Chart 1").Activate
   ActiveChart.SeriesCollection(1).Select
   ActiveChart.SeriesCollection(1).Points(i).Select
   With Selection.Format.Fill
        .Visible = msoTrue
        .Solid
        .ForeColor.RGB = RGB(255, 0, 0)

   End With

Else
End If
Next i
End Sub