Datepicker - change colour of several days in one month

Datepicker - change colour of several days in one month


Hello,
small question... Is there any way to change the colour ( or set the
number to bold ) of several days in a month?
For following example: as an indication to the user that something is
happening on that date ( given dates are coming from the database ) so
he better selects one of them.
Any thoughts?
Greets
Glenn