Normally when I open up an article like this and get ready to comment,it's to rip it apart for inaccuracies, disinformation, and a general reek of bullshit.
This has none of those things. I love it. I fan find no fault in it, and that's a rare gift on today's web. You even call out the whole "color == emotion" bull, though using far kinder language than I would... AND you link to WebAIM's excellent tool.
Bookmarked so I can point other people at it. THIS is something everyone calling themselves a "designer" should know, and the general lack of this knowledge is what makes most of the people calling themselves "web designers" absolutely positively NOTHING of the sort.