The Saiyan Eyes are a little something I came up with to complete the look. Available inworld here:
http://slurl.com/secondlife/Crescent/173/49/64
At only 100 L$, this is now the cheapest product at MagoTek.
Take a look at this as an example:

A saiyan's eyes turn a bright green when he powers up to super saiyan. Frieza found this to be particularly terifying. So I've made these to emulate that.
These eyes are prim attachments, which are worn in the Eyeball attach points. Those attach points are generally used for almost nothing, as their movement is based on the eyes. They're really only suitable for prim eyes. Chances are, you don't have anything in that slot.
The eyes interface with the Saiyan hairs, causing them to turn green and glowy when you power up to ssj. THey will fade back to normal when you power down, and turn completely invisible. As they're prim attachmewnts, your normal eyes are still worn underneath, and so your eyes will appear as they always have when you're not powered up.
The eyes will be triggered for ssj1, ssj2, and ssj3 in both Kakarot and Vegeta hairs
This product won't do anything without a saiyan hair though, so be sure you have one of them before buying.
I've added a little customisation menu too, to control how much the eyes glow. Everyone has slightly different tastes.

5 different glow levels are included.
As always, copy/modify permissions, free updates and replacements.