Is it possible to get natural black and green food colouring?

[TooTicky]

Need to know fairly soon or will have to get inventive with spinach and...um...charcoal.

liquorice? mint? Never tried,but you never know!

Unfortunately he (ds1, whose birthdat cake it is for) doesn't like liquorice or mint.

squid ink for black - might taste odd though

green on here , but no black...

Oh god, I can't face the squid ink - squid icing: the vegetarian's nightmare
But nettle or spinach icing, maybe...

I don't think spinach icing would actually taste of spinach. If you boiled some spinach you could use the green water that you get when you drain it to colour the icing (perhaps reduce it in a saucepan because you don't want too much liquid for icing). I bet the sweetness of the icing sugar would easily outweigh any spinachyness.

I'm almost tempted to go and make some myself now.

Right - will give it a go
Still not sure what to do about the black though...