In Java FX, you can change the padding around a label with CSS. In doing so with negative values, you can remove some space between the border of the label and the text inside it, like the images below, where I add negative padding to the top border:

Is there any way to change the color of the region marked on the screenshot below? This region appears only if the bottom scroll is moved to the max right.

I am working on building a tool where I have added a VirtualizedScrollPane to the CodeArea.

Something like this：
enter image description here