.lblGary {
    -webkit-animation: bgcolorchange 4s infinite; /* Chrome, Safari, Opera */
    animation: 4s infinite bgcolorchange;
}

@keyframes bgcolorchange {
    0% {
        background-color: crimson;
    }

    25% {
        background-color: rgb(246, 112, 14);
    }

    50% {
        background-color: crimson;
    }

    75% {
        background-color: rgb(246, 112, 14);
    }

    100% {
        background-color: crimson;
    }
}
/* Chrome, Safari, Opera */
@-webkit-keyframes bgcolorchange {
    0% {
        background-color: crimson;
    }

    25% {
        background-color: rgb(246, 112, 14);
    }

    50% {
        background-color: crimson;
    }

    75% {
        background-color: rgb(246, 112, 14);
    }

    100% {
        background-color: crimson;
    }
}