You should be able to find them. Try eBay.
Electric's own info: http://www.electricvisual.com/goggle-technical-information/
I wear EG1s but they have the same tints. Orange chrome is good all round but a bit too dark in low light. I've had rose lenses, those are better all round, mess up colours less and still add some contrast, so I bet the rose chrome would be good. The bronze chrome variations are a neutral tint so they're best on bluebird days. "Bronze red chrome", "bronze green chrome" and so on all give you the same neutral tint as the normal "bronze chrome" but look coloured from the outside. I just picked up some yellow chrome to try on low light days instead of the rose - they seem brighter and are still mirrored so they have the looks too.