How can I set the insets of a tooltip in Java?

I created a Tooltip with a HTML formated text, this works fine, but I have no space between border and text. How can I set Insets or an EmptyBorder?

Solution

Found this one article on how to change properties of Java ToolTip (background, border, etc.). It focuses on colors and border style but maybe you can use this approach for margins (insets) too.