body.color-2 {
    filter:grayscale(100%);
}

 
.color-2  img {
    -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
    filter: saturate(10%);
}

.color-2 iframe {
    -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
    filter: saturate(10%);
}