Ribbon Gallery - GetItemLabel

[PetLahev]

Hi, I've created my gallery where user can choose my color (I need more colors than the themes offers) and I use a label of each item like RGB value.
My question: How can I get label of item in VBA callbacks?

Look at Ribbon's code bellow (I had to put it as image)

and here is my code in VBA

Dim mIRibb  As IRibbonUI
'Callback for customUI.******
Sub idc_LoadRibbon(ribbon As IRibbonUI)
    Set mIRibb = ribbon
End Sub

'Callback for idc_galColor getItemLabel
Sub idc_GetLabel(control As IRibbonControl, index As Integer, ByRef returnedVal)
    MsgBox "Control Id = " & control.id & vbNewLine & _
           "Index      = " & index & vbNewLine & _
           "ReturnVal  = " & returnedVal, vbInformation, "GetItemLabel"
End Sub

'Callback for idc_galColor onAction
Sub idc_Color_Click(control As IRibbonControl, id As String, index As Integer)
    MsgBox "Control Id = " & control.id & vbNewLine & _
           "ID         = " & id & vbNewLine & _
           "Index      = " & index, vbInformation, "OnAction"
End Sub

Because I need to work with number which are stored in label property I'd like to know how Can I get the label property of selected item.
Of course, I don't want to show to user label property - because it is strange for them .