Is there an IDE out there that does structural syntax highlighting?

Question

Somewhat inspired by this question about a graphical programming environment. I don\'t think that C++ or C# are really conducive to this type of environment, but perhaps there\

Answer 1

Coderush does structural highlighting:

_{(source: devexpress.com)}

It quite feasible you could write your own plugin with DevExpress that achieves your exact original screen shot.