Excel formula that prints cell color (ColorIndex or RGB)

Question

Is there, in Excel, a Formula that retrieve the ColorIndex (or RGB) of a cell?

I found the follwing function:

CELL(info_type, the_cell)

Answer 1

please try with below

Changes made : see the comment in code

Module

Public Function Performance_Message(NonPreferredAvg As Single _
                                  , NonPreferredAvgname As String _
                                  , PreferredAvg As Single _
                                  , PreferredAvgname As String _
                                  , Optional Outputtype As String _
                                   ) As Variant

    Dim performancemessage As String
    Dim averagedifference As Single
    Dim stravgdif As String
    Dim cellcolor As String

    averagedifference = Abs(NonPreferredAvg - PreferredAvg)
    stravgdif = FormatPercent(averagedifference, 2)

    Select Case PreferredAvg
        Case Is < NonPreferredAvg
            performancemessage = PreferredAvgname & " Is " & stravgdif & " Less Than " & NonPreferredAvgname
            cellcolor = 4 '"green" 'Changes made

        Case Is = NonPreferredAvg
            performancemessage = PreferredAvgname & " Equals " & NonPreferredAvgname
            cellcolor = 6 '"yellow" ''Changes made

        Case Is > NonPreferredAvg
            performancemessage = PreferredAvgname & " Is " & stravgdif & " Greater Than " & NonPreferredAvgname
            cellcolor = 5 '"blue" 'Changes made
        Case Else
            performancemessage = "Something Bad Happened"
    End Select
    If Outputtype = "color" Then
        Performance_Message = cellcolor
    Else
        Performance_Message = performancemessage
    End If
End Function

Worksheet

Private Sub Worksheet_Change(ByVal Target As Range)
  Dim myColor As Double
  myColor = Target.Value ''Changes made
  Call SetPerformancecolor(Target, myColor)
End Sub

Private Sub SetPerformancecolor(Target As Range, myColor As Double)
  Target.Interior.ColorIndex = myColor ''Changes made
End Sub