How can I save this vanilla extract? I tried making my own vanilla extract a few months ago. Normally, it should be pretty dark (almost black). Mine isn't, as you can see:

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What I did was (after sterilizing it) filling a 250 ml (about a cup) bottle with vodka. I also cut up some (mostly seeded) vanilla pods, I think 4-5.

My guess is that there isn't enough vanilla in it. I'm planning on putting some more in. Is that the proper way to save this half-extract? Are there any downsides to adding new pods now?
I can't think of any downsides to adding more. The recipe I use calls for at least 8 beans per cup (more is better).

Usually it's recommended to cut the beans in half and scrape out the seeds, adding both the beans and the seeds to the vodka - at least, this is what I do, and I think it probably allows more flavor to be extracted.