SADIE, the difference between the "1065" and "213" is this:
213 is the interior trim code that tells us the overall color, mostly for the leather or MB-Tex, but also steers us to know what color the carpet should be, what color the entrance rail sill mats and scuff heel pads should be, what color the headliner, grip handles, seat belts, and sun visors are, as well as what wood species was used (on other models).
Each individual component of an interior has it's own color code. For example, regarding interior trim code 213, the Antique Yellow leather is color code 1065, the carpet your car came with, which was called Mottled Creme`, has a color code of 6434, the entrance rail sill mats were 6442 mottled sand, your head liner (for the hard top) and sun visors are D 12 Creme`, ect.
Back when parts like the above were still available from Mercedes the parts personnel were required to put a color code at the end of the part number. All Pagodas shared many of the same parts, but some were in different colors. Hence, the need for the color codes mentioned above.
In essence, think of it this way.......imagine you're writing a research paper, thesis, or dissertation. One of the first orders of operation would be to make an outline of what we want to write about. An outline lists the main topic of each paragraph, and each paragraph can have any number of points to touch on, which would be subscripts on your outline. Likewise, Mercedes more or less did the same thing. The interior trim code is the "main topic" of the paragraph, while all of the different color codes for the various parts are "subscripts" of the "main topic".
Much like with writing a paper, there is an art to understanding how it flows, is put together, and how it presents itself when it all converges......but when we understand the how and why of the convergences it's all a beautiful thing to behold.....because we understand it, and not much changes in it's structure. Why didn't Mercedes use one code number for all parts of a certain color? If I had to guess it was because they often paired different colors together for an interior, and R&D needed actual codes to refer to instead of colors.....that's just how some people's mind works.