Thank you@EAlexander and@Pat Stanford .
I did it (or i think i did all), but i still have problems.
I'm using the italian trial version, i did not say it before.
If you look the first pic all is right, it's want i expect to see (all the different materials), but when i want see the section with a color fill there is the problem.
For example in the second pic you see the section in black, than i want it in red and i change the setting, but instead of red, the section is white.
Sometimes, during my test, the contours of the section disappear despite the outline being active in the options.