Another technical post today, giving another approach to creating Venn-like diagrams without the color limitations of semi-transparent shapes.
- Draw an extra shape exactly the same size as the others, in the color you want
- Ctrl-X it away and paste it back in as a PNG (paste special, PNG)
- Crop excess bits away
- Overlay them
UPDATE February 2018: I have now added several designs for PowerPoint Venn diagrams on the SlideMagic template store that make use of PowerPoint's shape intersect function.