PictureFormat.ColorType Property (Excel)
Returns or sets the type of color transformation applied to the specified picture or OLE object. Read/write .
Syntax
expression .ColorType
expression An expression that returns a PictureFormat object.
Example
This example sets the color transformation to grayscale through MsoPictureColorType for shape one on myDocument. Shape one must be either a picture or an OLE object.
Set myDocument = Worksheets(1)
myDocument.Shapes(1).PictureFormat.ColorType = msoPictureGrayScale