Went and had a look at him.
He has very light conjunctiva in the pics I've seen.
Rather than them blacking up, try lightening them up but darkening his skin a bit.
Could be wrong - but it's your project. :-D
(
Guizmeaux,
Mon 6 Apr 2009, 21:05,
archived)
It might not work. I dunno.
But would be interested to see.
(
Guizmeaux,
Mon 6 Apr 2009, 21:09,
archived)