Support fzf-lua

[louwers]

This plugin is a port of the highly popular fzf.vim plugin: https://github.com/ibhagwan/fzf-lua

[louwers]

Something like this can be added to github-nvim-theme:

		-- fzf-lua
		FzfLuaNormal     = { fg = c.fg, bg = cfg.transparent and c.none or c.bg },
		FzfLuaBorder     = { fg = c.border },
		FzfLuaCursor     = { fg = c.bg, bg = c.fg },
		FzfLuaSearch     = { fg = c.syntax.constant, style = Styles.Bold },
		FzfLuaTitle      = { fg = c.blue },
		FzfLuaHelpNormal = { fg = c.fg, bg = cfg.transparent and c.none or c.bg },
		FzfLuaHelpBorder = { fg = c.border },

Full highlight groups that are supported can be found here: https://github.com/ibhagwan/fzf-lua#customizing-highlights

You also need to let the plugin pass the correct colors to fzf. I use this for that:

require 'fzf-lua'.setup {
	fzf_colors = function()
		return {
			["fg"] = { "fg", "Normal" },
			["bg"] = { "bg", "Conceal" },
			["hl"] = { "fg", "TelescopeMatching", "bold" },
			["hl+"] = { "fg", "TelescopeMatching", "bold" },
			["fg+"] = { "fg", "Normal" },
			["bg+"] = { "bg", "TelescopeSelection" },
			["prompt"] = { "fg", "Normal" },
			["pointer"] = { "fg", "Normal" },
			["marker"] = { "fg", "Normal" },
		}
	end
}