Ordnett has "top coat" as one of the meanings of "dekkfarge". See the link for this explanation of the English term in this context.

"Top Coated:: This leather is used almost exclusively on automotive seats, door panels, console lids, steering wheels and other trim panels found on the interior of most vehicles. With a few exceptions, Top Coated leather will be the only form of leather in any automobile. These exceptions include: Chrysler/Jeep, General Motors, Ford and several other manufacturers which uses Suede on some seat panels. This leather is also used on all types of leather furniture including sofas, loveseats, recliners chairs and ottomans. This leather is best identified by its smooth, grained texture. The finish has a semi-gloss or "matte" finish with no evidence of a "knapp". To test this type of leather; place a small droplet of water onto the surface of the leather. The water droplet will sit on the surface of the leather and will not soak into the leather immediately."