Hi Josep,
In the help file it says that the responses are color-coded as follows:
- Correct answers
- Ignored answers (if any)
- Wrong answers (if any)
May I ask you exactly where you can view this "help file" in Moodle? I am quite surprised that red should have been selected for correct and blue for wrong. This seems to go against commonly admitted use of colors in marking exercises. It is certainly the exact opposite of my own conventions.
Any comments?