I have a pair of Raybans that I had Ziess lenses put in. The tint looks brown but the view is fantastic especially if you are glider pilots as they define cloud very well. Even on the brightest day Oz I never squint and the colour perception is exactly the same as real life, no green tint.
The lenses are available from most opticians but they are a little pricey, but worth every cent.
[This message has been edited by AV8 consultants (edited 19 October 2000).]