Images are grayscale and don’t color up when hovered over (Error Message: “SECURITY_ERR: DOM Exception 18: An attempt was made to break through the security policy of the user agent.”)
In the demo files, all images have a placeholder indicating their size. These images are parsed from a website called placeholder.it. Because this is an external domain, some browsers find this as a security risk and cut off the script. So in order for the grayscaling on hover to work perfectly, you’ll have to host all images on your server, and delete all images from placeholder.it (or replace them all) before you test it.