I was investigating how easy it was to buy just the rail individually (without stripping down track) and came across C&L HiNi rail. I don't know how good it is but one selling point it had was its colour. They state how the colour is more similar to steel rail than regular nickel silver rail that has more of a yellow effect. Colour is one thing I hadn't even thought about until I saw that.
Steve, how close is the colour of the rail that you were using to the 9V Lego rail? From your video it looks fairly close.