>>7613401https://youtu.be/RruiUqqbCZcI think it was just a pop cultural phenomenon for a while. The 90's revived cult interest in the entire genre with shit like X-files and conspiracy documentaries and then it spilled over into the early 2000's with shit like lilo and stitch, butt ugly martians, and other various kids shows.
If you look around online theres alot of hold over merchandise from the time. I've stumbled on a few wikis for this sort of thing if you can believe it. Plus, "greys" are that perfect kind of generic design that lends itself to pretty much anyone's sensibilities that they never really get old, like dinos,robots,cowboys, or zombies.
