In the 70s when I was young and stupid I rode my Ducati 900 Adelaide-Perth, cruising on 200kph, using a black visor daytime and yellow at night. Once, after dusk, I stopped to change visors, and looked back to see a guard of honor of hundreds of 'roos lining the road I'd just been doing double-digit speeds on. I hadn't seen one. I think I was going so fast they didn't have time to jump out in front of me. While I survived, I don't recommend this strategy.