I have heard about Darwin leather and its aging a lot. Once i have seen 2 years old darwin leather bag that the leather change colour for example oak colour can turn darker unevenly.....and i think that's ugly! Now i'm about to purchase a roxanne, but the thing is that i like the way it look when the colour stay the same or at least evenly. Maybe the bag i saw was not a good example tho..So i would like to ask you, how is the darwin leather bag when it has been used for over a few years? or 5 years???? 10 years???