Per the post I just made on another thread, they are 2 separate and distinct options:
Option Code 18G - Interior Upgrade Package, includes bright polished 6 gauge instrument cluster with my color feature, leather-wrapped shift knob, satin register vents, satin aluminum spokes on steering wheel, satin aluminum instrument panel, satin alumnum door latches and door scuff plate, message center, leather wrapped steering wheel and Dark Charcoal Averdeen pattern front door panel inserts.
Option Code 68R - Interior Color Accent package, includes red leather front and rear seating surfaces with red front door trim inserts and red floor mats. requires Option 18G Interior Upgrade Package and Code KR Dark Charcoal Interior trim.
In other words, you cannot get the red seats w/o also ordering the Chrome / Satin dash and you must order the dark charcoal interior too.
But you CAN get the chrome / satin dash w/o the red seats.