Vim: Changing appearance of line numbers (beyond standard options)

I'm trying figure out how far I can go in fine-tuning the appearance of my Vim GUI. I'm using MacVim 7.3 and what I'd like to do is change the padding, text-alignment and border color of the line numbers.

I know there are some standard configuration parameters in the highlight command, particularly the gui group, but what if I want something beyond what's offered there? For example, a right border as opposed to underline. Is this possible?

It could be that it's simply not worth the trouble, but I'd like to at least know what the initial steps would be so I can make the call. (Even if it's just :help adding-border-to-li开发者_如何学编程ne-numbers and I happened to miss it).

Thanks.

No, unless you intend to go into vim's source and hack it from there, changing line numbers appearance beyond what highlighting offers is not possible.

However, I do remember a few patches that dealt with something of a kind, so you might want to check the archives. You will still need to recompile vim doing that (if you manage to find a patch that does that).