Dark driftwood? Green plants? Cardinal tetras? Sounds like a recipe for a _white_ background. Do not be afraid to try something new.
Personally, I think black backgrounds are best reserved for this layouts with complex or highly colorful stem plant groupings.
But this is an ultra flexible rule of thumb, and I've seen successful applications of all sorts of colors ranging from white to yellow to red to violet to blue to black. Try them all and find out what has the right "feel" you want to express in your layout.
Also, when asking a question like this, a photo of the tank would be nice.
I tried white and it ended up looking green from the light reflected off the plants, but it still looked good. I have a similar setup, no background looks good if there is no equipment visible. Currently I have a blue background. Black is good but the driftwood isn't as visible with it.
If you're lazy and just want to use paper, I'd go with one of those that has the gradiated (is that a word?) blue background on one side and a black on the other. In my opinion and experience, Cardinals are more comfortable and show better in a darker environment. Although they tend to show up in photos better against a lighter background.
My personel choice would be using bark. But again as you can not completely fill the background with bark, first you paint it black. You can flatten the bark under water by putting some weight on it and increasing it day by day. You can fix some suckers with nylon thread here and there on the backside of the bark and attach to the glass. I also grow microsorum and anubias varieties (mostly smaller species) on these barks. This way you will also be able to grow plants on the sides or back wall of the tank. I like heavily planted tanks and this is realy ideal for people like me.