stain

This might be a bit of an unusual question, as I don't think people generally stain their pens. This question is partly about small turned items, like bottle stoppers and other things, and maybe some pens. Mostly small turned items though. I've been fiddling with the idea of cross-blending...

I have acquired some olive wood blanks and they have some incredible, wild graining. However, unlike some olive wood pens that I have seen, the graining on these blanks does not contrast much with the rest of the wood color. Is there a stain that I could add to them to make the grain stand out more?