darken

I was hoping to darken my ovangkol thumb 5 string a bit. The more I lemon oil it...the darker it seems to get, but I would like to darken it more, close to black without staining it. Any suggestions?

I hope this isn't too stupid a question - but here goes: Any new Bubinga( Vette's in particular) Warwicks I have seen appear a fair bit lighter in hue than used or older models(though most of those I have seen only in pics). This phenomenon is really noticable "in person" so to speak. It does...

want to darken the grain of my thumb seeing as it is very light overall. Any suggestions? thumbin, I know you gots da secret!