yes. I use the extra properties to highlight the time on some places. Example:
.subjecttable .date {
color: #ffffff;
}
.subjecttable .time {
color: #ffffff;
font-weight: bold;
}
.tdheader .time {
color: #ffffff;
font-weight: bold;
}
.tdheader .date {
color: #ffffff;
}
.topictime .time {
color: #ff4500;
}
.posttime .time {
color: #ff4500;
}
This exaple may help you a little bit.