Bold some calendar items

In a calendar view I have some items that are approved and others that are not approved. Is there a way to bold the approved items? This still conveys the information without taking one of the precious 10 characters that are displayed on the calendar.

If this is not possible can I put an * in front of the information showing for the nonapproved items?

I have tried a calculated field on the form. But I don't think complex expressions are allowed.
I need something like this

If approved
showdata == name + " " + time
else
showdata == "*" + name + " " + time

Herb Wexler