IPhoto Calendars, how to change white days to black

Question

I'm not new to iPhoto or calendar making.  In fact, I've created calendars each year with iPhoto since 2010.  But this year I've chosen a calendar that has a light gray background, showing most days as Black and special days as White.  When I created the calendar I chose to show Birthdays and import those from my Contacts.  Except for some duplicated enteries on the same day, that birthday import went well.  But since I will be preparing this calendar for my parents, I do not want to put some of my friends birthdays on the calendar.  As such, I've gone through the calendar and deleted out those birthdays.  The problem is that those days are marked in White originally because they are birthdays, and even after I delete out the birthday info, the day remains white.  I double-click on it, but I cannot edit the day.  So how do I revert that White to Black?
Here's an example calendar that is styled like mine: http://tinyurl.com/mmsm3gj
Note in that example that the special day is the 8th, shown in White.  What I am saying is that I want to delete the text under that special day, and then have that day no longer be special.  In other words, I want to revert that white 8 back to a black 8.  How do I do it?
Thank you.

Answer 1

Create a huge rectangular shape inserted behind your tables.
Yvan KOENIG (VALLAURIS, France) samedi 7 avril 2012
iMac 21”5, i7, 2.8 GHz, 12 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.3
My Box account  is : http://www.box.com/s/00qnssoyeq2xvc22ra4k