It was green, but not a young tip cutting. I'm rooting some new cuttings and this time I'm rooting them in 50% vermiculite and 50% sphagnum moss. I dipped them in Clonex purple gel, but it's not required. I put mine in a small pot and stuck them in a gallon milk jug that I cut and made into a small greenhouse. This also filters the light some too. Hope this helps! They are pretty easy to root. It's just a matter of not letting them wilt and get too hot.
Another way to try propagation by 'layering': take a long vine (still connected to the mother plant) and secure it to the damp soil with a stone. After a couple of weeks it may root and you can clip it off and pot up the rooted cutting and have a new plant.
Thanks for the suggestions! Tabasco, the one I have now, I actually did that, and it was a good thing too as the mother plant died. I'm afraid I'm losing the matured baby and I want to propagate it before that happens. I just don't have any long vines to do it again.
I am trying several cuttings of these now. The ones in the glass of water in the window are by far the best of the bunch.
If you are wanting to actually take cuttings from the plant and root them, the glass of water in the window method can't be beat. However, if you are wanting to root them in soil, then the way recommended above can't be beat. It's all a matter of which way you want to go. The method of taking a cutting putting it in a mix to root doesn't seem to be as effective to me as those other two ways of rooting them.