green is purely a marketing colour. That's why its gradually made its way into the cricket gear. As the sport as commercialised so as to their approach to merchandising. They realise they have had to change it up every year to sell more gear and there's only so much you can do with yellow/gold. Also, to get the less diehard fans to wear stuff, they have to make it somewhat fashionable. So, again, less gold.
I'd hate for us to make jersey design decisions based on fashion. I love the visibility the gold jersey gives our fans at any sporting event featuring around the world. It's a sign of real support.
As for a green away jersey, why? It'll conflict with the Springboks, who we face away a fair bit. As well as navy teams - Scotland, Samoa, France - hell even the All Blacks.
I also LOVE that we have the traditional gold jersey whilst the Kangaroos have to put up with a green one.
Nup, we've built a tradition that works. Let's not destroy that tradition to 'honour' one that just doesn't seem relevant anymore.