return {
    -- color theme
    "EdenEast/nightfox.nvim",
    lazy = false,
    priority = 1000,
    config = function()
        local Shade = require("nightfox.lib.shade")
        require("nightfox").setup({
            options = {
                transparent = true,
                styles = {
                    comments = "italic",
                    functions = "italic",
                    keywords = "italic",
                    types = "italic",
                }
            },
            palettes = {
                all = {
                    black   = Shade.new("#404944", 0.15, -0.15),
                    gray    = Shade.new("#505050", 0.15, -0.15),
                    white   = Shade.new("#dee4df", 0.15, -0.15),
                    red     = Shade.new("#ff6060", 0.15, -0.15),
                    darkred = Shade.new("#903030", 0.15, -0.15),
                    strongred = Shade.new("#bb0000", 0.15, -0.15),
                    orange  = Shade.new("#ce8c14", 0.15, -0.15),
                    green   = Shade.new("#a3d397", 0.10, -0.15),
                    darkgreen = Shade.new("#005602", 0.10, -0.15),
                    darkyellow = Shade.new("#dfd100", 0.10, -0.15),
                    yellow  = Shade.new("#e3c46d", 0.15, -0.15),
                    darkblue = Shade.new("#1010aa", 0.15, -0.15),
                    blue    = Shade.new("#7070dd", 0.15, -0.15),
                    magenta = Shade.new("#C02490", 0.30, -0.15),
                    pink    = Shade.new("#ff82c2", 0.15, -0.15),
                    purple  = Shade.new("#761464", 0.15, -0.15),
                    cyan    = Shade.new("#7ac9ff", 0.15, -0.15),
                    lightblue = Shade.new("#5c77ff", 0.15, -0.15),
                    softblue = Shade.new("#10ddff", 0.15, -0.15),
                    brown = Shade.new("#553200", 0.15, -0.15),

                    bg0     = "#0f1512",                 -- Dark bg (status line and float)
                    bg1     = "#0f1512",                 -- Default bg
                    bg2     = "#1b211e",        -- Lighter bg (colorcolm folds)
                    bg3     = "#252b28",    -- Lighter bg (cursor line)
                    bg4     = "#303633", -- Conceal, border fg

                    fg0     = "#dee4df",               -- Lighter fg
                    fg1     = "#dee4df",               -- Default fg
                    fg2     = "#dee4df",               -- Darker fg (status line)
                    fg3     = "#89938d",                 -- Darker fg (line numbers, fold colums)

                    sel0    = "#404944",          -- Popup bg, visual selection
                    sel1    = "#00513b",        -- Popup sel bg, search bg

                    comment = "#89938d",
                },
            },
            specs = {
                carbonfox = {
                    syntax = {
                        comment = "comment",
                        bracket = "darkyellow",
                        builtin0 = "softblue",
                        builtin1 = "sel0",
                        builtin2 = "sel1",
                        conditional = "darkblue",
                        const = "gray",
                        dep = "darkred",
                        field = "green",
                        func = "pink",
                        ident = "darkgreen",
                        keyword = "blue",
                        number = "yellow",
                        operator = "white",
                        preproc = "strongred",
                        regex = "purple",
                        statement = "magenta",
                        string = "cyan",
                        type = "red",
                        variable = "orange"
                    },
                    diag = {
                        error = "darkred",
                        warn = "yellow",
                        info = "lightblue",
                        hint = "fg3",
                        ok = "darkgreen",
                    },
                    diag_bg = {
                        error = "red",
                        warn = "#a16b00",
                        info = "cyan",
                        hint = "bg3",
                        ok = "green";
                    },
                    diff = {
                        add = "darkgreen",
                        delete = "darkred",
                        changed = "lightblue",
                        text = "fg0"
                    },
                    git = {
                        add = "darkgreen",
                        removed = "darkred",
                        changed = "lightblue",
                        conflict = "orange",
                        ignored = "gray"
                    }
                }
            },
            groups = {
                all = {
                    Cursor                    = { fg = "palette.white", bg = "palette.lightblue" },                  -- character under the cursor
                    WinSeparator              = { fg = "palette.bg2" },                                          -- the column separating vertically split windows
                    EndOfBuffer               = { link = "WinSeparator" },                                       -- filler lines (~) after the end of the buffer.  By default, this is highlighted like |hl-NonText|.
                    CursorLine                = { bg = "palette.bg1" },
                    CursorLineNr              = { fg = "palette.cyan", style = "bold" },                         -- Like LineNr when 'cursorline' or 'relativenumber' is set for the cursor line.
                    Search                    = { fg = "palette.lightblue", bg = "#00513b" }, -- Last search pattern highlighting (see 'hlsearch').  Also used for similar items that need to stand out.
                    IncSearch                 = { fg = "palette.lightblue", bg = "#1a6b51" },                  -- 'incsearch' highlighting; also used for the text replaced with ":s///c"
                    ModeMsg                   = { fg = "palette.fg3", style = "bold" },                          -- 'showmode' message (e.g., "-- INSERT --")

                    NvimTreeRootFolder        = { fg = "palette.lightblue", style = "bold" },
                    NvimTreeFolderName        = { fg = "palette.lightblue" },
                    NvimTreeFolderIcon        = { fg = "palette.lightblue" },
                    NvimTreeOpenedFolderName  = { fg = "palette.lightblue" },
                    NvimTreeSymlinkFolderName = { fg = "palette.magenta" },

                    NvimTreeExecFile          = { fg = "palette.red" },
                    NvimTreeImageFile         = { fg = "palette.white" },
                    NvimTreeSpecialFile       = { fg = "palette.yellow" },
                    NvimTreeSymlink           = { fg = "palette.magenta" },
                },
            },
        })
        if not vim.g.vscode then
            vim.cmd([[colorscheme carbonfox]])
        end
    end,
}