Those don't look like the legion of honour, which is looped through the button hole, around the edge of the lapel. Here's a photo. Your's appears to be the thread forming the button hole itself.
The Italians have been doing this for a while. Valextra green stitchings, Isaia red stitchings, Garavani yellow stitchings, etc. It's just lazy creativity if you ask me.