Nintendo announced today that the Sea Green 2DS will be available for purchase on June 6th. It will cost $129.99 just like the other models (Crimson Red and Electric Blue). There is also a Pokemon Y Electric blue model and a limited-edition Pink Peach model (only available at GameStop).
The Sea Green model features a white front and back with sea green accents on the D-pad, buttons, stylus, and edge. Nintendo also announced the launch of Tomodachi Life on the same day, June 6th.