MonthCalendar: Change format n Color of some dates

[Guest]

Hello
I am using VB.Net
I am using MonthCalendar control. I have made few dates bold as required but
I want to change the color and /or format of some dates to different colors to identify them for different purpose

Also, I want to refresh the monthCalendar, as per the changes

Please suggest a solution for the above problems
Thanks n Regards
Samik.