.grow { transition: all .1s ease-in; }
.grow:hover { transform: scale(1.3); }

.imgColorChange {
    /* filter: url(filters.svg#grayscale); Firefox 3.5+ */
    filter: gray; /* IE5+ */
    -webkit-filter: grayscale(1); /* Webkit Nightlies & Chrome Canary */
    -webkit-transition: all .2s ease-in-out;
}

.imgColorChange:hover {
    filter: none;
    -webkit-filter: grayscale(0);
    -webkit-transform: scale(1.01);
}