In this moment modified files in project are marked in Projects view by adding "Modified" after its name. Usually I have as narrow as I can view of Projects (saving space), so sometimes I can't see that some files has been modified. Coloring such item on the tree view (Projects view) would make me able to see it. A bit worst situation is happen if a file has been modified, but is placed in folded directory. Then I don't have any change to find out that something has been modified in this directory, but if directory item placed in tree view (Projects view) would be colored then all would be clear. Reproducible: Always KTextEditor, Kate, KDevplatform, KDevelop cloned at 14.11.2015 (KDevplatform and KDevelop from branch 5.0)
This is refers the project using Revision Control System - in this particular case it was git
I like the idea.
I wanted to report exactly the same
*** This bug has been marked as a duplicate of bug 267248 ***