Just messed with the DuckDuckGo settings a bit (e.g. changed theme to red and set to show image of last person who replied). Let me know if you hate any of this!
I said it before -- dark backgrounds with light text "should" be a default so that everyone can choose between dark and light colours. I work a lot at night. Even while using redshiftgui (or - windows lovers - check out f.lux) dark pages are more pleasant imho.