Como cambiar los colores de botones con links

[Ferdinand1945]

A ver, proba asi:

Código:

#btnlyo:link {
    font-family: sans-serif;
    background-color:#787878; 
    font-size: 13px;
    color: #FFFFFF;
    text-decoration: none;
    height: 31px;
    width: 120px;
    padding: 8px 38px;
    background-image: url(../img/oth/btn_loy.png);
    background-repeat: no-repeat;
    background-position: 0 0;}
    
#btnlyo:visited {
    font-family: sans-serif;
    background-color:#339966;
    font-size: 13px;
    color: #7118D3;
    text-decoration: none;
    height: 31px;
    width: 120px;
    padding: 8px 38px;
    background-image: url(../img/oth/btn_loy.png);
    background-repeat: no-repeat;
    background-position: -31px -31px;}

 #btnlyo:hover {
    font-family: sans-serif;
    background-color:#C8C8C8;
    font-size: 13px;
    color: #FFFFFF;
    text-decoration: none;
    height: 31px;
    width: 120px;
    padding: 8px 38px;
    background-image: url(../img/oth/btn_loy.png);
    background-repeat: no-repeat;
    background-position: 0 -31px;}

#btnlyo:active {    font-family: sans-serif;
    font-size: 13px;
    color: #FFFFFF;
    text-decoration: none;
    height: 31px;
    width: 120px;
    padding: 8px 38px;
    background-image: url(../img/oth/btn_loy.png);
    background-repeat: no-repeat;
    background-position: 0 -31px;}

De ahi ya le pones los colores que quieras cambiando el background-color: de cada uno de los btnlyo declarados ahi. Suerte