Question about S-beats colors

[Llaith]

Does anyone know if the color differences between S-beats blades are anything other than cosmetic? I have seen green, red and blue so far...if anyone knows, some info would be great...thanks

[Ambrai]

I noticed that the gold can heal. Other than that I havent seen anything special.

[Ven_Jance]

hey there
I have a pair of pink S-Beats.(matches my maghttp://www.pso-world.com/images/phpbb/icons/icon_smile.gif )
The special attack is insta-kill (with no negatives)
Perhaps the specials are the dofference?
VJ