I'd just like to say that Steven makes
rather good points here, and I agree.
Thanks Isarra.
I feel like I should add that I'm seriously behind the general direction we're taking with the revisions to mediawiki.ui controls, including the new color scheme and so on. But even the basic semantics of "constructive", "destructive", and so one we previously attempted for mediawiki.ui seemed to confuse some folks, and isn't quite right.
What if we retain your scheme Jared as described, but add a rule regarding behavior of Progressive and Constructive actions being adjacent? I like the "Quiet" state you guys are using for Thank buttons in Flow. Might Preview behave the same way?