I have an iMac with OS X version 10.9.4. When using the iCal application I cannot change the color of a new event I post to match the color I've chosen for the event. Example: If I post a Red color coded event the lettering for my description is black. I want the description I type for my Red event to be Red, not Black. It would stand out as what color code the event is. Currently if I post a new Calendar event and choose a color for it just a small dot appears next to black font description of my event. I want colored font to match the colored dot on my calendar. Additionally there is a Gray Birthday event option but I cannot place any personalized Gray color coded birthday events. I want the typing font color to match the event color for new iCal events I add and I want to be able to post Birthdays using the Gray color set up on my iCal menu.
The calendar app doesn't give you that level of flexibility. Apple has designed it to look a certain way, and that's the way it's going to look, bar some pretty serious hacking. Busycal is a calendar app that does use the calendar's color for the text, not just for the dot.
The "Birthdays" calendar is a special one automatically generated based on the birthday info you enter for your contacts. You can't edit it directly.