Drawing line changes

We use silhouette to setup our project for cutting, there are certain colors that we typically use, when the finished project is emailed to our laser and downloaded to Lightburn, the colors are not what was used in Silhoutte and they are becoming colors that we have never used.

What is going on? What are we doing wrong?

The layer colour palette is fixed so LB will try to match the entity’s colour to the nearest LB layer colour.

This might help: