This article will explain the different colored routes that you will see on your Karoo 2.
The Route will be shown in Yellow when you are riding a saved route.
It will stay Yellow as long as you stay on-route.
This is the routing engine. It follows the Yellow (Planned route) unless if you go off-Route, then the shortest path to join the planned Route will be created in Red.
This will also happen if you start a ride away from the start point of the route.
Any temporary route to a destination or a POI will be shown in Purple.