sum by color when colors are set by conditional formatting

Hi matt nipper,

since you mentioned that you "have done an exhaustive search online" i have come up with a solution for you, although it has two limitations A) it will only work, if your rules of conditional formatting is created using conditional formatting rules with formula aka (use a formula to determine which cells to format) and B) the UDF will only work if sum range is more than one cell another word, it will not sum a single cell, as well as the conditional formatted range is more than one cell.

the example file, you can download it from here. I could not upload it here, as it is a Excel Macro-enabled Workbook that contains the UDF

Function SumConditionColorCells(CellsRange As Range, ColorRng As Range)
Dim Bambo As Boolean
Dim dbw As String
Dim CFCELL As Range
Dim CF1 As Single
Dim CF2 As Double
Dim CF3 As Long
Bambo = False
For CF1 = 1 To CellsRange.FormatConditions.Count
If CellsRange.FormatConditions(CF1).Interior.ColorIndex = ColorRng.Interior.ColorIndex Then
Bambo = True
Exit For
End If
Next CF1
CF2 = 0
CF3 = 0
If Bambo = True Then
For Each CFCELL In CellsRange
dbw = CFCELL.FormatConditions(CF1).Formula1
dbw = Application.ConvertFormula(dbw, xlA1, xlR1C1)
dbw = Application.ConvertFormula(dbw, xlR1C1, xlA1, , ActiveCell.Resize(CellsRange.Rows.Count, CellsRange.Columns.Count).Cells(CF3 + 1))
If Evaluate(dbw) = True Then CF2 = CF2 + CFCELL.Value
CF3 = CF3 + 1
Next CFCELL
Else
SumConditionColorCells = "NO-COLOR"
Exit Function
End If
SumConditionColorCells = CF2
End Function

in the attached example file you can see that from A3:G16 cells are formatted using Conditional Formatting.

User Defined Function (UDF) is placed in cells J2 & J3 and cells I2 and I3 are the criteria color used as reference inside the UDF in J2 and J3.

I hope this helps you.  

 Edit: uploaded file and updated the code to the correct one.