Installation:

Usage: sudo ./install.sh [OPTIONS...]

  -t, --theme                 theme variant(s)          [tela|vimix|stylish|whitesur]       (default is tela)
  -i, --icon                  icon variant(s)           [color|white|whitesur]              (default is color)
  -s, --screen                screen display variant(s) [1080p|2k|4k|ultrawide|ultrawide2k] (default is 1080p)
  -c, --custom-resolution     set custom resolution     (e.g., 1600x900)                    (disabled in default)
  -r, --remove                remove theme              [tela|vimix|stylish|whitesur]       (must add theme name option, default is tela)

  -b, --boot                  install theme into '/boot/grub' or '/boot/grub2'
  -g, --generate              do not install but generate theme into chosen directory       (must add your directory)

  -h, --help                  show this help

If no options are used, a user interface dialog will show up instead

Examples:

• Install Tela theme on 2k display device:

sudo ./install.sh -t tela -s 2k

• Install Tela theme with custom resolution:

sudo ./install.sh -t tela -c 1600x900

• Install Tela theme into /boot/grub/themes:

sudo ./install.sh -b -t tela

• Uninstall Tela theme:

sudo ./install.sh -r -t tela

Installation with NixOS:

To use this theme with NixOS you will have to enable flakes. Before you do this, please inform yourself if you really want to, because flakes are still an unstable feature. First you will have to add grub2 to your flake.nix file as a new input.

# flake.nix
{
  description = "NixOS configuration";
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    # Add grub2 themes to your inputs ...
    grub2-themes = {
      url = "github:vinceliuice/grub2-themes";
    };
  };
  outputs = inputs@{ nixpkgs,  grub2-themes, ... }: {
    nixosConfigurations = {
      my_host = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        specialArgs = { inherit inputs; };
        # ... and then to your modules
        modules = [
          ./configuration.nix
          grub2-themes.nixosModules.default
        ];
      };
    };
  };
}

After that, you can configure the theme as shown below. In this example it is inside the configuration.nix file but it can be any file you choose.

# configuration.nix
{ inputs, config, pkgs, lib, ... }:
{
  boot.loader.grub = { ... };
  boot.loader.grub2-theme = {
    enable = true;
    theme = "stylish";
    footer = true;
    customResolution = "1600x900";  # Optional: Set a custom resolution
  };
}

Issues / tweaks:

Correcting display resolution:

• On the grub screen, press c to enter the command line
• Enter vbeinfo or videoinfo to check available resolutions
• Open /etc/default/grub, and edit GRUB_GFXMODE=[height]x[width]x32 to match your resolution
• Finally, run grub-mkconfig -o /boot/grub/grub.cfg to update your grub config

Setting a custom background:

• Make sure you have imagemagick installed, or at least something that provides convert
• Find the resolution of your display, and make sure your background matches the resolution
  • 1920x1080 >> 1080p
  • 2560x1080 >> ultrawide
  • 2560x1440 >> 2k
  • 3440x1440 >> ultrawide2k
  • 3840x2160 >> 4k
• Place your custom background inside the root of the project, and name it background.jpg
• Run the installer like normal, but with -s [YOUR_RESOLUTION] and -t [THEME] and -i [ICON]
  • Make sure to replace [YOUR_RESOLUTION] with your resolution and [THEME] with the theme
• Alternatively, use the -c option to set a custom resolution

Contributing:

• If you made changes to icons, or added a new one:
  • Delete the existing icon, if there is one
  • Run cd assets; ./render-all.sh
• Create a pull request from your branch or fork
• If any issues occur, report then to the issue page

Preview:

Documents

Grub2 theme reference

Grub2 theme tutorial