In our next release, Skuid will be including a new “ElectroZap” component. Just like rendering conditions, you dictate the data conditions that activate, and there are optional properties for how big a jolt it delivers.
(Oh - its not still April 1st is it? )
Seriously. In javascript you should be able to evaluate some data condition in real time - and if the condition is true turn on a style. Maybe the whole page background could turn red, or a div could be changed from hidden to exposed. Etc.