Are the new metal doors supposed to be mostly silver/bright metal coloured, or is this something to do with my fast and loose unclean installing of mods on top of vanilla files?

In this image you can see the Silver doors on the right look very nice, whereas in the Copper doors on the left only some pixels are copper-coloured: https://imgur.com/a/YpQMt3r

The old-style metal doors were uniform in colour.