A freeform shape is being created with the intent of having no / fully transparent fill color. This is attempted as: Freeform shape = new Freeform(); shape.setFillColor(new Color(1f,1f,1f,0f)); When POI eventually writes this to a powerpoint file, the resulting shape is not transparent. It appears that the alpha value in the Color object is not flowing through.
This was actually fixed a while ago via r1734865