CSS Hover Darken Color
.your-css-class:hover {
background: linear-gradient(rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.25));
}
Pushy Pants
.your-css-class:hover {
background: linear-gradient(rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.25));
}There is "opacity" which will make the background shine through:
opacity: 0.5;(change the value according to your needs)