.my-color-overlay {
    position: relative;
}

.my-color-overlay::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5); /* Change 0,0,0 to your RGB color and 0.5 to your preferred opacity */
    z-index: 1;
}

/* Ensures your text and content stay on top of the overlay */
.my-color-overlay > .vc_column-inner {
    position: relative;
    z-index: 2;
}