Blade Color: Green
A Counselor's Wisdom
A green lightsaber represents the Light Side, but in a different way than a blue lightsaber. Green is the color of nature and balance in the Star Wars universe. Jedi who wield a green lightsaber are calm, patient, and insightful. They often serve as counselors and advisors.
Some fans have hypothesized that green can also signify a slight deviation from the pureness of the Force as represented by the color blue; green can symbolize a pull towards earthly balance and unseen elements.
Luke Skywalker wielded the first green lightsaber in Return of the Jedi. George Lucas suggested it's color be changed from blue to green so that it may stand out more on camera against the blue of the sky.