A little extra something that I forgot to include in the original post (doh).
In case anyone is interested in making their own recolours/edits/defaults/whatever, here are the PSD files for the eyes:
DOWNLOAD PSD FILE FOR REGULAR EYES
DOWNLOAD PSD FILE FOR ALIEN EYE
I'd encourage other creators to use these, rather than exporting the textures via SimPE/Bodyshop, to avoid introducing any pixelation.
Cheerio again!