You can choose between 4 different effects:
Metallic - beautiful metallic glow which gives the eyes depth and shine. This is my most popular option.
Rainbow Shine - stunning rainbow glow effect which is hard to show on the photos but it looks amazing in real life similar to the colorful shine of a DVD disk. Please note that the micro honeycomb pattern that gives this effect is visible on the closeups, it is not pixelization of the image.
Chrome - maximum shine and light reflection, similar to metal foil.
Plain - no shine effect, gives maximum image contrast. Great for realistic eyes.