Possible to make a "blurry" widget?

[Hornete]

I would like to create a widget that makes the screen below blurry(Something like a gaussian blur), I wonder if this is possible? 

Thanks for reading.

[DarkMatterZero]

Funny enough, one of the new characters that was just released in the latest Don't Starve Hamlet beta, Wagstaff, has blurred vision outside of the area immediately around him whenever he's not wearing his goggles. If you have the single player version of the game, I'd highly recommend activating the beta and investigating his files as a starting point.

This post explains how to access the current beta.
Hope this helps!