Add highlight for the pin icon

[otavioschwanck]

would be nice a way to change the color of pin (to increase visibility)

[Iron-E]

Seems like if we're adding highlights for the pin button, it would be good to add highlights for the other buttons too. I'll look into this.

[Iron-E]

@otavioschwanck give #543 a try

[xuhui-github]

i like this but my nvim does not show the pinned icon

[Iron-E]

i like this but my nvim does not show the pinned icon

By default they are not shown. This should do it:

require'barbar'.setup {
  icons = {
    pinned = {
      button = '<your icon>', 
      filename = true,
    },
  },
}

:h barbar-setup.icons.pinned has more info