Class definition with :: doesn't seem to be honored with code coloring

[banjoey]

If I have a class definition like this:
class InitialMigration < ActiveRecord::Migration
end
code coloring is not honored. If I have it like this:
class InitialMigration < ActiveRecord
end
code is colored properly. I'm not extremely "deep" into TM, so I may be doing something wrong, but I pulled the latest bundle from here and that didn't seem to help.