Fretex find

Fretex is the name of the Salvation's army's thrift stores in Norway. In Lillehammer we have really nice one. That's where I buy almost all my clothes. I recently found this cardigan hanging there screaming to me. It's a traditional, boxy type cardigan, but it was just my size and my colours, and it had to come with me home. Can you see how it matches my house? I have not seen the pattern elsewhere. Does anybody recognize the pattern?