Funny you mention that .I just put them in the most lit up place in my house. Is there also another option . Something more definate. Thats eczactly what what I saw .When you go into a shoe department you see the shoe on display and when they bring it out it's supposed to be the same color but it's ususlly slightly darker. Thanks for the reminder.
Acetone works wonders. It won't harm the leather and lightens nicely, though it does take a bit of rubbing. I've done this with a pair of Allen Edmonds Sandfords that I lightened from their bourbon burnished (like a darker version of their chestnut) to something close to Edward Green's birch or antique maple.