Hello Juan Pablo,
Thank you for your question.
Using the
Visual Style Builder you can create a custom theme for you button as well. Navigate to the
BorderPrimitive in the tree on the left, then from the tool window on the right change the
ForeColor(s) to some color, including transparent. If this does not help, please let us know what exactly is not working in your case. Feel free to send us the theme as well.
Best wishes,
Nick
the Telerik team
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