I re-themed the Aisleriot for my mom's computer. The default theme looked to ugly, and there was no themes to choose.
So why not share it with you?
How to install:
Extract the pixmaps.tar.gz to /usr/share/gnome-games/pixmaps
(To easy to the task, run sudo nautilus)
You may notice I have another card deck theme too.
To get this, get the package gnome-games-extra-data
After installed, you can choose new theme iniside Aisle Riot