What does "Shades of Pemberley" mean?:
It's taken from the book Pride and Prejudice when Lady Catherine says
"Heaven and earth, are the shades of Pemberley to be thus polluted?"
Most commonly I've found that people think "shades" refer to the ghost or ancestors of the Pemberley Estate, or Mr. Darcy's lineage. Thus, would he be polluting his family line by marrying someone of inferior birth.
I've also found that some think it refers to the trees on the Pemberley estate, referring to the grandeur of the estate and it's size and thus the very existence of pemberley itself.
I happen to like the first thought, that his family lineage is threatened.
Also "'Shades' is the conventional rendering of the Latin 'manes'. 'Manes' were the ghosts of the deceased of the locality, who took a benevolent interest in the activities of the living. The concern is that an unsuitable person should eventually join them."
So, I chose "Shades of Pemberley" for the name of Aaric and Cait's folder because they both have so much invested in their families. But I also liked how shades could point to ghosts and in a figurative sense, they both have a lot of ghosts, demons, or skeletons to deal with.
(Information taken from: http://forum.wordreference.com/showthread.php?t=16 5004)
As for the description of the folder, it is a combination of 2 quotes I found randomly and smooshed together. Neither are my own work.