Is there a way to apply a color label to a package in Package Explorer in Eclipse? What I am wanting is similar to the way OSX lets you label things in Finder. I'd like to be able to quickly pick out one or two packages by giving them labels.
I was exactly asking this same question when I found yours. I didn't found a propper answer
However there's a way to group your projects using a tool called "working sets"
With that you can categorize and label your projects in order to quick browse & find them.
A google search of "eclipse working sets" will you show how this works
The second tip of this list is a good brief explanation of how to use it
http://bwinterberg.blogspot.com/2009/09/eclipse-tips-hints.html
I know It's not what you asked but it's the closest solution I found for this issue