Hi Colin, it may depend on the colour of timber underneath. Lighter stuff like Basswood you would expect to come up brighter than say Mahogany which is quite reddish brown in it's natural state.

Only thinking out loud but if you bought the clear neck DT finish and did a few experiments in diluting Karajini down it may in fact come out lighter? I know DB has mixed custom brews and colours for people so maybe sending him a PM or email could be worthwhile.