In the Portfolio Editor, I find difficult to see quickly in which sub-portfolio I am, when the focus is in the right part of the PE. I leave the tree all expand, so there are quite a few sub-portfolios in the tree. The active one is just indicated by a very light gray, barely visible, I find it is not enough. I have often to visually browse all the folders in the tree to at last identify where this light gray is.
It must also be said that I use more and more the Find command, so with quick jumps from an investment to another located elsewhere in the tree. And I use for the lists (PE) a font quite small (Tahoma 8pt).
I would like a bit more contrasted color of the currently active sub-portfolio in the left part of the PE, that can be seen with the peripheral vision without having to move the eyes specifically in the folder tree to find it.
What I mean with the example portfolio: