I love how natural CXL ages and darkens. Yours may end up looking much closer to the brown over time if you prefer the darker color. I think they are developing a nice rich patina. IMO natural CXL has more depth than brown CXL but it takes a while to get there.
I recently picked up Oak Street's trench boot in natural CXL. It's coming along nicely but it's only been a couple of months. For reference:
thanks for the input. i completely agree that the appeal of natural cxl is how it ages. i almost got those oak st trench boots when they first came out, they look great. i also have a pair of quoddy chukkas in natural cxl that is closer in color to those trench boots. the alden pair are much lighter.