It’s not random - it loads the same way every time. It’s more of a file system thing, from what I’ve discovered: if you do ‘ls -f’ on those colors directories, you get the order that they get loaded in. This happens on some, not all, APFS-formatted High Sierra disks I’ve seen. Still investigating why it loads in an unordered fashion instead of ordered. And it affects ALL versions of SketchUp (2016, 2017) that I’ve seen, so it’s not likely something we did, unless we’re using a deprecated call.