The vinyl on the seats is called Caribou, and I think door trims are the same. Some people call it "long grain roadrunner". Same stuff used on HJ and HX except there was no Buckskin in those series. What you want is trim code 63V for HZ Kingswood or Kingswood SL, not 63V for Holden as the vinyl will be different. Kingswood vinyl is a 2-tone when you look close, in the black trim they even gave it a different trim code and called it slate black due to the 2-tone effect. Watch also for HZ 62V and later 63C as these are different too. The name of 62V and 63V on Holden (except Sandman) is something that eludes me, it may just be Beige or it may stay as Buckskin. 60V on Holden and Belmont HJ was called Beige (called Chamois/Covert on Kingswood) but there is no 60V on base model HZ, only 62V and 63V. The colour samples from the colour and trim books indicate it was called Buckskin.
Here is a scan of the Holden colours on the right and Kingswood & Sandman on the left. The two-tone effect shows up best on 67V but you can see it on the others too. This is a small preview of the stuff i'm working on for the book, and shows you why it takes so long!
Headlining, others will tell you, i'm not 100% on when these changed. I think HZ had the new fine grain headlining material but not sure if it started at release.

HZ trims001.jpg