To your question, the RAW's, unprocessed files are not like this from a Leica. You need to color grade (photographers say "post processing"). Color grading is used mostly for Video. In Photography, there are a lot of other things, it's mostly about light, not color. Highlights, Shadows, Contrast, Blacks/Whites etc.. Of course colors are also very important.
If you want good colors straight out of the camera, you could look into FujiFilm.