Since the overview search results now have a dark background layer, we
can brighten the background image a bit again. As a factor we use 0.5,
since that ensures the texts in the IconGrid are still readable and the
background image is visible, too.
Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/2133
const Params = imports.misc.params;
var DEFAULT_FADE_FACTOR = 0.4;
-var VIGNETTE_BRIGHTNESS = 0.2;
+var VIGNETTE_BRIGHTNESS = 0.5;
var VIGNETTE_SHARPNESS = 0.7;
const VIGNETTE_DECLARATIONS = '\