Switch/case statements not highlighted in IDE 1.6.9

When I finally realized that I needed a colon after the case variable rather than a semicolon the attached code compiled but the switch/case keywords are not highlighted. Why not or am I missing something here?

sketch_sensorType.ino (944 Bytes)

Do you mean syntax highlighting or error highlighting?

Thanks I was referring to syntax highlighting. I just realized that control statements are supposed to be highlighted in gray.