Currently the results for a successfol and for a *tentatively* successful (i.e the document validate with 
override or fallback) "look" the same, e.g apart from the wording they use the same style and color. 

We could instead use a different color (I suggest a middle grey) for the "this page is tentatively valid 
foo" banner.

PRO: makes it clearer that the document will *not* be valid until the changes are made.
CON: might be confusing if the document is actually valid X, and the user performs a tentative 
validation for Y. 

The CON case above is fairly weak and unlikely, but there may be others I have not thought of. 

Opinions?