Hello, marvelous community.
I’ve recently uploaded the XSI theme for Blender with lots of changes and improvements that you can read in detail and download from here >>
There’s a lot of pictures in the gallery that show the comparison between Softimage and Blender’s adaptations. This is a continuous work, so if you’re an ex-Softimage user who’s enjoying Blender, I’d be glad to read your comments on how to improve the theme.
You can notice that when you enter EDIT mode now the Outliner shows a yellow icon which reflects the yellow EDIT state of the mesh (wireframe), so new users can identify similar colors between the viewport and the Outliner.