Is there a way to suggest DuckDuckGo instead of Google for failed search UI?

When a search returns no results, there’s a suggestion to try a Google search. We can alter the text above the button and could even alter the button label. But is there a way to change the button to use DuckDuckGo instead of Google? We do not want to endorse use of Google.


Changing the actual form looks like it’ll need a theme component with custom javascript written, because it looks like js.google_search doesn’t actually work?