[rakoo]

You should try the "Classic" theme, which at least shows results' titles as blue, but not all links.

[shmerl]

I like ianstormtaylor's suggestion above more (which uses one orange color for titles and gray for links). Mixing both orange and blue in the Classic theme for links and titles looks somewhat irritating.

UPDATE: DDG allows setting custom colors, great! Check out https://duckduckgo.com/settings (Color).

[ianstormtaylor]

Amazing! Thanks for the tip. For others, the two colors I went with are:

    Normal: #C22D00
    Visited: #CF6D5A