OmniGraffle 7 has color patterns in the color picker. However, when I choose and object and try to assign a pattern to it there are no patterns available. Anyone know where they are hiding or what incantations are necessary to make them appear?
OH! I just hit this myself. The slider for both foreground and background are at 0% opacity—invisible!
Move either the foreground or the background opacity slider up, and hopefully your patterns will reappear.