Quote Originally Posted by Orangutango
Cathy, it was probably an isabella (Otherwise known as fawn) and tan. Lilac isn't a recognized term in the breed. Isabellas and blues are dilutes, and therefore can have many skin/coat problems (alopecia) just like dilute Dobermans and other breeds with dilute colours. They are pretty rare for the above reason.

Here's a web page with the different colours and coats Dachshunds come in:

http://www.keystonekennelusa.com/Min_Dach_Color.html
Yep. The owner did tell me he was inherited after a friend died and she didn't yet know much about him so I'm not surprised she didn't have it correct.