Choosing French door window treatments can be complicated due to the shape of the door, the position of the door handles and your particular light control and privacy needs.  Here are a few suggestions for french door window treatments that may suit your needs.  Since most French doors have decorative handles that could interfere with the operation of a blind or shade, you'll want to choose a window treatment that is not very deep, such as a 1" wood blind or a soft shade that can hang close against the door.  A roller shade with the standard roll option (instead of reverse roll) will allow the shade to hang flush against your French door.

things to consider:

Your privacy and light control needs will play an important part in selecting French door window treatments.  If you plan on regularly raising and lowering your shade, you'll want something that won't get tangled up on the door handle.  If you plan on leaving the shade pulled down, you should order the hold down brackets option when customizing your blind - these are installed on the door to keep the bottom of the shade in place.