Improvement: Colored marking of existing users in a course

[stdoma]

Hello!
The plugin saves me time in some processes. Thanks for that.

After the user list (with groups) is entered and sent, you get a status overview.
In this overview, it is highlighted in color (green) if a group already exists in the course or if a user is already assigned to a group.
If a user is already enrolled in the course, the info field is not highlighted in color and remains gray, as with users who are newly enrolled in the course.
It would be good if the existing users / enrolments were also highlighted in color.