I only have one Louis Vuitton... a Cabas Mezzo which I bought in July. I didn't use it until school started in mid-August and have carried it 3-4 times a week since. But the leather is still SOOO light except for a few spots where rain fell on it (oops!). Even those spots are still incredibly light! It has darkened a little bit, but just BARELY. (I'm comparing it to the little tab with the date code inside of the bag.) How long is it supposed to take for the leather to get darker? Is there anything I can do to speed up the patina process? I'm sorry to sound so ignorant; I've just never owned any Louis Vuitton before.