No mate, I think that's just an optical illusion caused by not having that nasty orange blob in the middle. I always wanted a set of US spec rear lenses, even when I had my first Cougar and had never heard of this club, I think they just give a much 'cleaner' look. It's the same reason why I changed my orange side repeaters for white ones rather than crystal or smoked, I wanted them to tie in with the white reflector in the headlights. I also changed the orange front indicator bulbs (and those inside the side repeaters) for the mirrored type that don't look orange at rest.