Re: Bleeding orange and green...or what?
Oooh, that's hard. I can't actually remember if it was ever established. My guess would be red, though. As Cardassians can apparently breed without complex medical assistance with Bajorans, humans and Kazon, I imagine it's iron based.
We are all the sum of our tears. Too little and the ground is not fertile, and nothing can grow there. Too much, and the best of us is washed away.