Hey there, I had the same question and after some digging I found this custom CSS to remove the text that appears when you hover:
#grid .item a div.wrapper div.project-title h2 {
visibility: hidden;
font-size: 0;
}
#grid .item a div.wrapper div.project-title h3 {
visibility: hidden;
font-size: 0;
}
I cannot for the life of me figure out how to remove the darkened overlay hover effect. I'm trying to make mine go lighter instead of darker, as seen on this site, featured on the Squarespace Flatiron template page.
But all I can manage is adding the light effect on top of the dark effect, which looks pretty awful. If anybody has ideas on how to cancel out the first hover effect, I'd be much obliged!