I knew a guy who had a pair and one was light... real light. Put them both in black sand and they darkened up but have real nice light dots all over the rim of the Disc (atleast my opinion)
the darkest one is the male. His claspers are about 3/4" long now. Just not showing up good in the pic. I will try to get a picture of them soon. I think my female is ready for action, but he is not quite ready.