Here is a quick list of 78-81 A body and 82-88 G body Oldsmobile Cutlass interior colors followed by the RPO code and the paint code for ordering purposes for those wanting to interchange or restore parts from other years to restore their interior, paint chips are here:

http://www.78-88olds.com/forum/showthread.php?t=547

There were only a few pieces that GM used these codes for:
Dash, column, rear package tray, console plastic, console arm rest, dash lower column trim and speaker covers.
Everything else was color molded.

The semi gloss was used on the console plastic parts and arm rest, the top pad of the console body was color molded.
Believe it or not the flat stuff was used on the dash and column I believe.
I have seen low mile dashes and they are not shinny nor is the NOS Sage green one I have and just look at the lower column trim and speaker covers compared to the console plastic parts.
It's a little misconception since everyone coats them in armor all...
Rear package tray is flat.


1978:
***Dark Carmine 74 (78-79) -2 years
Ditzler #: S.G.: 72273, L.G.: 72291
Dupont #: S.G.:45224, L.G.: 45243
***Dark Sage Green 44 (78-80) *Buckets/Console not offered in this color this year
Ditzler #: S.G. 45245, Flat 45362
***Light Blue 24 (78-79) -2 years
Ditzler #: S.G. 14782
***DarK Camel Tan 62 (78-80)
Ditzler #: S.G. 24542, Flat 24530
Dupont #: S.G.:45222
***White 11 (78) - 1 year only
Ditzler #: S.G. 8855
***Black 19 (78-80)
Ditzler #: S.G. 9387
Dupont #: S.G.: 4428

1979:
***Dark Carmine 74 (78-79) -2 years
Ditzler #: S.G.: 72273, L.G.: 72291
Dupont #: S.G.:45224, L.G.: 45243
***Dark Willow Green 44 (78-80)
Ditzler #: S.G. 45448, L.G. 45444
Dupont #: S.G.:45863, L.G.: 45877
***Light Blue 24 (78-79) -2 years
Ditzler #: S.G. 14782
***DarK Camel Tan 62 (78-80)
Ditzler #: S.G. 24542, Flat 24530
Dupont #: S.G.:45222
***Oyster 12 (79-80) -2 years
Ditzler #: S.G. 90101
Dupont #: S.G.:45220
***Black 19 (78-80)
Ditzler #: S.G.: 9387
Dupont #: S.G.: 4428

1980:
***Dark Claret 79 (80, 85-88)
Ditzler #: S.G.: 50994 L.G.: 50996
Dupont #: S.G.: 44265 L.G.: C8019
***Dark Willow Green 44 (78-80)
Ditzler #: S.G. 45448, L.G. 45444
Dupont #: S.G.:45863, L.G.: 45877
***Dark Blue 26 (80-82) - 3 years
Ditzler #: S.G. 15344, L.G. 15345
Dupont #: S.G.:C8005, L.G.: C8014
***DarK Camel Tan 62 (78-80)
Ditzler #: S.G. 24542, Flat 24530
Dupont #: S.G.:45222
***Oyster 12 (79-80) -2 years
Ditzler #: S.G. 90101
Dupont #: S.G.:45220
***Black 19 (78-80)
Ditzler #: S.G.: 9387
Dupont #: S.G.: 4428

1981:
***Dark Maple 77 (81-84)
Ditzler #: S.G.: 72415 L.G.: 72435
Dupont #: S.G.: C8115 L.G.: C8129
***Medium Waxberry 45 (81) - 1 year only
Ditzler #: S.G.: 82473 L.G.: 82497
Dupont #: S.G.: C8108
***Medium Jadestone 47 (81-82) -2 years
Ditzler #: S.G. 45589
Dupont #: S.G.:C8112
***Dark Blue 26 (80-82) - 3 years
Ditzler #: S.G. 15344, L.G. 15345
Dupont #: S.G.:C8005, L.G.: C8014
***Light Sandstone 63 (81-82) -2 years, vinyl interior available in '81
Ditzler #: S.G. 24899
Dupont #: S.G.:C8105
***Medium Doeskin 64 (81-82) -2 years
Ditzler #: S.G.: 24867 L.G.: 24980
Dupont #: S.G.: C8110


1982:
***Dark Redwood (Maple)77 (81-84)
Ditzler #: S.G.: 72415 L.G.: 72435
Dupont #: S.G.: C8115 L.G.: C8129
***Dark Blue 26 (80-82) -3 years
Ditzler #: S.G. 15344, L.G. 15345
Dupont #: S.G.:C8005, L.G.: C8014
***Medium Jadestone 47 (81-82) -2 years
Ditzler #: S.G. 45589
Dupont #: S.G.:C8112
***Light Sandstone 63 (81-82) -2 years
Ditzler #: S.G. 24899
Dupont #: S.G.:C8105
***Light Slate Gray 13 (82) - 1 year only
***Medium Doeskin 64 (81-82) -2 years
Ditzler #: S.G.: 24867 L.G.: 24980
Dupont #: S.G.: C8110


1983 -1984:
***Dark Maple 77 (81-84)
Ditzler #: S.G.: 72415 L.G.: 72435
Dupont #: S.G.: D8391 or Dupont #: S.G.: C8115 L.G.: C8129
W12A7298 S.G. W5A7298 flat
Medium MapleDitzler #: S.G.: 72568
Very Dark Maple
W12A8284 S.G. W5A8284 flat
***Dark Royal Blue 22 (83-84) -2 years
Ditzler #: S.G.: 15632 Flat: 15682
Dupont #: S.G.: C8385
***Light Sand Gray 60 (83-84) -2 years
GM: WA7690
Ditzler #: S.G.: 33567 Flat: 33617
Dupont #: S.G.: C8384 Flat: C8384
Medium Sand Gray (Console?) (83-84) -2 years
Ditzler #: S.G.: 33568 Flat: 33618
Dupont #: S.G.: C8329
***Dark Charcoal 18 (dash) (83-84) -2 years
Ditzler #: S.G.: 33570 Rinshed Mason Semi: 13257
Dupont #: S.G.: C8385
W12A7350 S.G. W5A7350 flat
Medium Charcoal (column?)
Ditzler #: S.G.: 33569 Rinshed Mason Flat: 13195
***Medium Gray Fern 42 (83-84) -2 years
Ditzler #: S.G.: 33586 Flat: 33619
Dupont #: S.G.: C8327
***Dark Briar Brown 67 (83-84) -2 years
Ditzler #: S.G.: 25306 Flat: 25229


1985 -1988
***Dark Claret 79 (80, 85-88)
Ditzler #: S.G.: 50994 L.G.: 50996
Dupont #: S.G.: 44265 L.G.: C8019
W12A4887 S.G. W5A4887 flat
***Dark Blue 27 (85-88)
W12A8576 S.G. W5A876 flat
Headliner: 1665 (shade too dark)
***Medium Sage 43 (85-87) *1985 was the only year for buckets/console in this color
Medium Sage: W12A8583 S.G.
Dark Sage: W12A8583 S.G. W5A8583 flat
***Medium Dark Gray 82 (85-88)
W12A8247 S.G. W5A8247 flat
Dark Gray: W12A8595 S.G. W5A8595 flat
Headliner: 1810
***Light Saddle 62 (85-88)
W12A7769 S.G. W5A7769 flat
Med. Lt Saddle: W12A8806 S.G.
Dark Saddle: W12A8257 S.G. W5A8257 flat
Very DK Saddle: W12A8285