Is there a way to change the look of the expand / collapse boxes and lines in Notepad++?

I was wondering if anyone knows of a way to change how the Expand / Collapse boxes and lines look in Notepad++.

For example currently when you place your cursor within a xml or html tag, Notepad++ will turn the expand/collapse box and the lines connecting them to a thin red line.

If possible I would like to achieve some of the following....

1. Thicken up this red line and make it very bold so it stands out.




2. Maybe an option to change what the expand/collapse boxes look like (not that important)




3. Way to have Notepad++ highlight the background of the entire tag selected with a user definable color. This would really help even more to make tags stand out.

If anyone has anything information they can share on the subject it would be greatly appreciated.