Thank you very much for your feedback!
CSS Editor itself is a part of WTP. What JBoss Tools adds is:
- CSS Editing Perspective
- File > New > CSS Class Wizard
- Context menu of a .css file > CSS Dialog
- CSS Properties View
- CSS Preview View
To get more details please refer to the JBoss Tools Reference. Chapter 6. CSS Editing Perspective.
Yahor, I think Juergen refers to the CSS Dialog editor which does come from JBoss Tools.
Now I'm using the Java EE package of Kepler RC3 and JBoss Tools 4.1.0.Beta2 and the CSS editor works fine.