Hi Tony,

I have had success doing a trans-black finish using a weak colortone mix (in water) and then oing back over with a clean wet rag to draw the colour out of the non-flame parts. The colour stays in the flame but is removed quite alot from the rest. You can do this in several passes, each time building up the darkness of the flame and reducing everywhere else. The black does build up in the non-flame wood over time, but it was a matter of working until the lighter areas were where i needed them. Something to consider anyway.

cheers,
Gav.