Independent Voices themes - why do they expire?

[rbkw]

I really like the Themes. I also like the descriptions you gave them etc.

Why do they expire? How can I make them 'last'?

Thx,

Rob aka rbkw aka yoo.flow

[ultracodez]

Apparently they change?

https://blog.mozilla.org/en/products/firefox/firefox-news/independent-voices/