The bundle adds some new keywords that aren't shipped with the standard TM fonts for highlighting. You actually need to install one of the themes that ships with the bundle.
Per the README install instructions: "To install the color themes for the syntax highlighting: Click on the themes found in the color_themes dir by clicking on them in Finder."
If you want to use the bundle with your current theme you will need to add the keywords and choose appropriate colors for your theme. You can see examples of this by installing one of the ones that ships with the bundle and then going into "Preferences -> Fonts & Colors".
If you do end up adjusting another theme to work with the bundle please let me know so I can incorporate it into the bundle. :)
However, after rereading your question.. Are you just wondering about why the feature's narrative is not highlighted? (The narrative is the "In order to..." text.) If so, the highlighting of that was purposely removed. Aslak thought it shouldn't be highlighted, and I agreed with him, because the narrative should really be custom and whatever works for you. It also was annoying to have those highlighted since it would sometimes highlight the scenario sections incorrectly as well.