I must be missing something, because I can't make the time font green and the date font yellow like superboyac did. It would be nice if it could be like on KDE where you can have different font sizes for time and date. I thought some kind of tag could be used on the time and date format string to represent the colors.
By the way, I used Betaclock at work on Windows XP and it worked fine, but it doesn't seem to work on my Vista x64 home machine. I'm using t-clock at home, but it doesn't seem to support different font/color for time and date either.