Could it be worthy to make `VerboseTB._tb_highlight_style` a public attribute?

[dalthviz]

Hi! Over QtConsole we are doing some work to use the changes done at https://github.com/ipython/ipython/pull/14138 to customize traceback syntax highlighting (see https://github.com/jupyter/qtconsole/pull/608).

Following https://github.com/jupyter/qtconsole/pull/608#discussion_r1638413158 and https://github.com/jupyter/qtconsole/pull/608#discussion_r1643501066, wanted to check if making VerboseTB._tb_highlight_style a public attribute makes sense/could be possible.

Also, are there any plans related with changing the traceback syntax highlighting logic in the future? Any in info is greatly appreciated!