I don't dislike the new look, but it's not a dramatic departure. And I fail to see the problem that the new look solves. The red bar doesn't bother me, but is there a reason why the search button switches from green to blue? That seemed visually jarring.
I still have it as my default search engine, so don't worry, you haven't lost me as a customer.
That uses our URL parameters: http://duckduckgo.com/params.html
You can also achieve this via the settings: http://duckduckgo.com/settings.html