If you want images to be blurred add this inside the end of the theme
example:
css/themes/Lite/Lite.css
Add in the bottom:
/* Blur */
.chat_image {
-webkit-filter: blur(4px);
-moz-filter: blur(4px);
-o-filter: blur(4px);
filter: blur(4px);
transition: all 0.9s;
-webkit-transition: all 0.9s;
-moz-transition: all 0.9s;
-o-transition: all 0.9s;
}
.chat_image:hover {
-webkit-filter: blur(0px);
-moz-filter: blur(0px);
-o-filter: blur(0px);
filter: blur(0px);
}
If it does not show after you put it, then clearcache
