Possible Jagermeister recipe. Colouring advice?

[phanmo]

I was screwing around, experimenting with pastis flavouring, got my girlfriend to taste and she thought it tasted more like Jagermeister. We did a side by side tasting and what I made is almost identical to Jager!!!
Unfortunately I didn't keep track of quantities but I'll give a list of ingredients here:

green anis seed
fennel seed
star anis
a couple of allspice berries (took the allspice out after a few days)
a handful of sprigs of fresh thyme
A teaspoon of so of liquorice syrup
sweetened with clover honey
just a touch of maple syrup

I've coloured it with homemade dark caramel but I'm not sure how to get the almost black colour of the real stuff. I have the taste and the sweetness I want so I'm reluctant to add more caramel.
Anybody have any suggestions for a really dark brown without adding too much flavour?