It's a tough call Esther...
I have a lighter brown one as well and I considered listed it on the page, then decided to go with the "various shades exist" wording. When I have the two keys side by side, it's easy to tell the difference, but with other keys that I don't have myself in my collection, it's tough to compare scans from one person to anothers scans. Many times what seems to be a shading difference is simply a difference in scanners/scanner settings/etc. For an example of this, check out the gold keys on the Paris page. There's a wide range of shades appearing on the list, yet I believe they are almost all identical in shading -- it's simply a difference in scanners.
I'm not sure which way to go with the shading differences. I would love to get a feel of what users of the catalog would like to me to do.
Thanks,
Jim