Hello
Виталий,
I afraid that with the current implementation of RadCalendar it won't be possible to easily achieve the desired appearance.
If you have any other questions, let us know.
Regards,
Kalin
Telerik
Check out Telerik Analytics, the service which allows developers to discover app usage patterns, analyze user data, log exceptions, solve problems and profile application performance at run time.
Watch the videos and start improving your app based on facts, not hunches.