Here's a distinction I'd made, but not with such clear labels:
"How shall we save the world? ... We must renounce all the dirty
pleasures of modern life. .... Alex Steffen and the other contributors
to worldchanging.com - and this big book which the website has spawned
- describe that puritanical branch of ecological thought as "dark
green" and, in opposition, describe themselves as "bright green". Dark
greens demand that you dismantle your car and get a bike instead;
bright greens recommend you upgrade to a Toyota Prius. Dark greens say
the world is already overpopulated; bright greens suggest that with
more efficient farming, we could feed another few billion."
http://books.guardian.co.uk/review/story/0,,2035002,00.html
The distinction is a little loaded: "dark" sounds a bit gloomy, and
"bright" could be intended to imply intelligence. And, like most
such distinctions, most of us are somewhere in the middle. [I'm mostly
biking, walking, and taking public transport, but we own a Prius so
the rest of the family isn't forcibly made car-free].
But it's a good distinction in tht it reflects whether one is
fundamentally optimistic or pessimistic about the application of
technology versus the application of simplicity.