Nevermind, I think I got it. If there is a better way than this, please let me know. I just went in to the “Additional CSS” section in the Customize menu and added this:
.post-main .has-post-thumbnail .entry-wrap:hover .entry-main{
opacity:0;
}
.post-main .post .entry-wrap:hover {
opacity:0.6
}
Hopefully this will work OK even if the theme updates.
