I just want to say that Red Oil made with Alkanet used over here to add depth and colour to gun stocks there is a little more to the story than just Alkanet/Oil.
Alkanet colour is sensitive to Acid or Alkali condition of the wood in fact it was used as an indicator before the Litmus test became the usual standard practice, so the same mix applied to two walnut stocks can give two differing colour shades depending on what the wood was treated with before the oil is applied. Also when you make the oil the colour is not identical from batch to batch and some finishers added dragons blood to the mix to obtain that special signature colour they wanted.
So there is a little more to it than mixing alkanet root with oil or any thing else for that matter and applying it to the wood in fact you must put some experimentation in to perfect the process for your self.
