From Flaab I also bought a small rigid heddle. Back home, I wanted to try it on my weighted frame and chose to experiment 3 color patterns from Annie MacHale (https://www.taprootvideo.com/preview_class.jsf?iid=12&cid=2)
As the heddle is quite narrow, 31 threads, some modifications were needed. The first idea was
I then decided to modify it to get a 3 color pattern on both sides (and changed border threads)
Modifications are very simple and not obvious with a white weft. To show them, here is the pattern with a red weft.
Everytime I pick up a thread, I drop the right next one. Very easy to do (that was my first 3color band) and result is nice.
Here is a picture of the setup
The two faces of the band.