Ah here's the original. I almost forgot to upload it. The wallpaper where I used this is over here.
As you can see, it has nice saturated colours. I also extended the original scan. So you can see that the pants and the strap with the yellow ring on it look very weird.
After getting used to the pure black shades on the wallpaper, I had a look at this image and I suddenly felt that the dark shades weren't dark enough. Luckily I had gone crazy on the gradients which helped to darken the dark parts (but they left the light parts intact...layer effects are awesome!).