Apart from the color of their costumes, their weapons and effect parts have different colors as compared to the normal release as well.
According to the source (Hobbystock), these two limited figures will be available for pre-order from the many Kaiyodo Power Shops in Japan starting December 15th.
January 15th, 2010 release, 2,400 Yen each (inclusive of tax).
All images are from Hobbystock.