Hi Andre,
You need to change the css background or if you have sprite like us you can update background-position or you can change the css class for a marker style.
Here is the example how to change the marker position and background position manually: http://trykendoui.telerik.com/@germanov/UsOL/2
I hope this helps.
Regards,
Hristo Germanov
Telerik
Join us on our journey to create the world's most complete HTML 5 UI Framework -
download Kendo UI now!