@arspr: CSS rule priority is more comples than that.
http://www.w3.org/TR/css3-selectors/#specificity
And yes, it is on my todo list to to indicate overriden properties.
As for the order they are shown in, the order is not going to change, it will allways be style attirbute, rules matched from inline style tag, rules matched from included stylesheets (in the order they are included), inherited rules from ancestors.
As for the font size, I am not sure I understand why you find the same font ok in the editor and too large in live css. I can probably add a config option to have live css use the geenral ui font instead of the editor font, but I am not going to add a separate font size control for it.