I recently found out that input can now take input() as color. I'm pretty sure that's a new feature, (given that I've seen user workarounds for that for a long time) but I even after I saw someone use it, I haven't been able to find any documentation for it. (Such as what it returns, if I can extract the RGB values, etc) Heck, if I hadn't seen someone use it, I wouldn't know it existed, based on the help entry for input().

Is there a place where these sort of features are documented? It seems to me that most of the official DM documents and resources are far out of date. The input as color thing is just one example.
Actually, the reference for input() redirects to arguments (verb) which lists color (and links to the rgb() proc, presumably as a hint as to the values returned) as a valid type.