Hi. You can recolor the eye following This tutorial as it was a normal eye. The only thing that changes is that besides your diffuse, you will need an "emission map" which controls the glowing color of the eye.
There is one tutorial HERE that explains how the emission map works and how to make one. One this to notice though, is that the process of adding the emission to the .package is no longer needed via warehouse. You can import your emission map directly from Studio tab. It should be included in the list of maps available.
If you want a static glow, like EA uses in their Vampire eyes, use a BLACK alpha in your emission. And you control the glowing color in the RGB channels.
And finally, HERE is a useful thread about a discussion with someone that made Vampire eyes already. You might find something useful there as well. (Ignore the bugs though, Studios has fixed those issues in the last update and the eyes work perfectly)
If you run into trouble or have more questions feel free to ask! GL.
Please do not PM me to help you with your creating problems. You can post in the Creators Help so everyone can see the problem and solution.
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