I answered to the support thread opened on the same subject. I would ask you to continue our discussion in only one thread to avoid any duplication. Thank you for the understanding.
Here is a quote of the answer I've posted in the support ticket:
The desired behavior can be accomplish with CSS rule that will hide the validation messages:
//display: none !important;
The Kendo UI validator applies "k-invalid" class to the invalid html elements. You can style it to show red border like this:
.k-widget > span.k-invalid,
Here is a Dojo demo, that applies those styles and also uses MutationObserver to update the correct widget elements.
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI