Is this possible with Kdenlive?

http://www.metacafe.com/watch/1011422/sin_city_color_effect_for_video/

Just now, i don't have another footage. So there is just a picture.

Yuo mean just like this?



Chroma Hold and box blur (i think that's the right name in english).

And just a little bit more extreme with:
Chroma Hold, Box Blur, Contrast, Saturation, Brightness

Ah, very, very nice. Thanks folks.