Consistent variable window style

[askfiy]

Can the border lines be changed to the same style? instead of having multiple colors?

For the obsessive-compulsive disorder like me, I always want to see all the outer borders of the plugin are the same color, such as hover, rename, diagnostics, etc. I believe there are not a few people who have this idea.

Of course, hover and rename can be modified by themselves, but diagnostics cannot modify the border line by themselves.

Is it possible to open up a configuration option so that everyone can choose whether to enable uniform color style lines?

[againxx]

FYI, diagnostic has a configurable highlight group as well,
https://github.com/tami5/lspsaga.nvim/blob/511a335b470aa32ceb6ba8d53d61f6b52362c6f4/plugin/lspsaga.vim#L42