How to edit split border colour.

[ChrisTaylorDeveloper]

I find it very difficult to see the border between splits. How can I edit the split border colour please?

[mrtnvgr]

You can overwrite WinSeparator highlight group:

require("catppuccin").setup {
    custom_highlights = function(colors)
        return {
            WinSeparator = { fg = colors.flamingo },
        }
    end
}

[ChrisTaylorDeveloper]

Perfect! Thank you.

[marques-bruno]

Sorry to bump a closed topic, but it seems to work for horizontal splits, however vertical splits don't seem to have borders.
Is there a way to change that? (add a horizontal line between splits)

[ChrisTaylorDeveloper]

I had some success with vim.opt.laststatus=3 which removes the status bar and therefore the horizontal split line becomes visible. Combine this with Neovim 'win bar', which can take over some of the duties of the missing status bar.

[marques-bruno]

Thanks, that works perfectly! :)