That's not right. They come and go randomly; you can see their current state here:
http://www.greylight.org/cgi-bin/bloodstar.pl
As of posting, they are all dark. This means something bad will happen (not that this is surprising).
Well, then change it!
Darn. I thought it was like the lunar cycle, and they just rotated... :/
And who says the two stars need to be bloodstars?
