web/web_search_alphabetic/static/src/css/web_search.css

.openerp .search_filter {
    background: #F0F0F0;
    width: 100%;
    border: 1px solid #999;
    background: -moz-linear-gradient(top, #F0F0F0 0%, #C0C0C0 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#F0F0F0), color-stop(100%,#C0C0C0));
}

.openerp .oe_filter_label {
    background: #F0F0F0;
    width: 3.35%;
    border: 1px solid #999;
    background: -moz-linear-gradient(top, #F0F0F0 0%, #C0C0C0 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#F0F0F0), color-stop(100%,#C0C0C0));
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#F0F0F0', endColorstr='#C0C0C0',GradientType=0 );
}
.openerp .oe_filter_label:hover {
    background: #F0F0F0;
    background: -moz-linear-gradient(top, #F0F0F0 0%, #A1A7CE 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#F0F0F0), color-stop(100%,#A1A7CE));
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#F0F0F0', endColorstr='#A1A7CE',GradientType=0 );
}
.openerp .oe_filter_label:active {
    background: #aaa;
    background: -moz-linear-gradient(top, #999999 0%, #EEEEEE 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#999999), color-stop(100%,#EEEEEE));
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#999999', endColorstr='#EEEEEE',GradientType=0 );
}
.openerp .oe_filter_label.enabled {
    background: #aaa;
    filter: none;
    -moz-box-shadow: none;
    -webkit-box-shadow: none;
    -o-box-shadow: none;
    box-shadow: none;
}
.openerp .oe_filter_label {
    font-weight: bold;
    text-transform: uppercase;
    text-shadow: #EEE 0 1px 0;
    color: #4C4C4C;
    white-space: nowrap;
    margin: 0;
}