It looks like the Apex editor is not applying syntax highlighting to everything that should be getting it.
Consider the following screen shot:
The keywords "Map", "Boolean", "List", "String" were not highlighted at all.
The keyword "new" was highlighted correctly the first time it was used, but not the second time.
The "Account" object seemed to get no color or font highlighting, nor did system static class "Schema". Not sure if that last one is by design or not, though.