I'm thinking I should just coax it back to my normal red, but it's just oh so tempting. Mmmmm, shiny black hair, mmm.

It's half way there already so I say go for it. And as your hairdresser will probably give you reddish/burgandy highlights when she dyes it that will allow the hair to still be a rich color as the black fades I think you should.

To quote Mom: "It's only hair." And as you are adding color not stipping itoff it won't damage it.

Do it!