I wanted to share a great tip that pinku provided in the comments!
Even if you don’t use Playfish Cash, if you have a friend with a new brown home dye stations, then your pet can use it for free!! You can use it to dye your wigs three shades of brown (ash, light brown, and dark brown).
I hope one of the rich pets in the cafe buys one soon, so we’ll all have access to dye our wigs! Cross your fingers that fingers Playfish won’t change this on us. 😀
Edited to add (Sept. 9, 2010): Pet Society ruined the fun, so we can no longer dye wigs at friends’ dye stations. So lame.