That's Mozilla.org's decision and I have no comment to make about it; I only have a side comment about Nvu : I am glad I did not spend time to move Nvu to a Qute-like theme, as a lot of people requested. As a matter of fact, I really like Nvu's current look and I do believe I have much more important stuff to do for the moment.

Update: urrrgggggghhhh... Let's say I won't be commenting Mozilla.org's decision but will be commenting Winstripe theme itself : don't read the text here, just look at screenshots; Qute 0.1 first, Qute as of today, and finally Winstripe as of today. Scary, really scary.