I also had the thought that an orange HL was a pose factor, but no more.
We were traveling the N1 between Laingsburg and Prince Albert Road in poor light condition this morning, when I noticed a reddish light about 3-4 clicks behind us. I though it was an ambulance or some emergency vehicle, but it was sure more noticeable than the rest of the vehicles, even the ones who bothered to use headlight in the bad light.
After a while a KTM with an orange HL come past. Only then did I realized it was this bike that I saw. When I first noticed the light it was so far back I could not even tell cars and lorries apart. So they are very, and I mean VERY visible.
BTW, I saw said bike parked in Prince Albert later on. Was it any of you guys?