I was thinking if there's a way to tag a folder on eclipse with a color, kinda like if you were using a highlighter pen. I have many folders on a project but i use 3 of them more constantly then i use the others, so if they were marked with different colors i'd speed up my productivity, because i wouldn't waste too much time looking for the folders.
Edit:
I just found out about the working sets. Even though that's not what i was originally thinking about, it does the trick. Feel free to answer though.
The best solution is probably to add those folders to a separate working set, and in the package explorer view use working sets as top level elements (configure that via the little triangle at the top of the package explorer).