crazybump, it's a very browny-olive color - the photos aren't the best.
For the record, the thing that turns the handles dark is oils - from your skin, moisturizers, whatever - they are able to penetrate the leather there because whatever protective coating the leather has wears off quickly on the handles, leaving it open and porous. And the leather is actually absorbing - that's what makes it spread evenly down the length of the handle - like putting a drop of oil on a paper towel. If you can seal the leather in some way, it won't be as likely to absorb the oils. But it's not "dirt" in the usual sense of the term, and doesn't have anything to do with personal hygiene - it's probably more related to body chemistry. It's also why surface cleaners won't clean the darkness off the handles.
Oh, and I almost forgot! Congratulations, Deco!