p.button a.grey {
    background-color: #ebeced;
    border-color: #ebeced;
    color: #000;
}

p.button a.purple {
    background-color: #660099;
    border-color: #ebeced;
    color: #000;
}

p.button a.grey:hover, p.button a.grey:focus {
    background-color: #ddd;
    border-color: #ddd;
}

p.button a.purple:hover, p.button a.purple:focus {
    background-color: #660099;
    border-color: pink;
}