The color management system is a very advanced feature and is certainly why Scribus is getting popular. Of all the free software we use such as GIMP, Inkscape, Scribus, and some others, they all share the same color management process based on the famous Little CMS libraries.
For the user this is very handy:
All the software will have the same options. So if you know them in one, you know them for all and if you have set a certain color management in one application, it's easy to set the others.
The color result in the different software will be very similar.
But what is that made for. Isn't it enough to define colors and take care that they are CMYK? In some ways, yes. It depends on your needs and of the quality that you want.
We have already discussed about some printing issues: paper type and color, quality of the inks, and so on. There are so many possibilities and we generally use very little; so some standard presets have been defined. We call them profiles. Profiles...