{
  programs.helix.themes = {
    gruvbox_custom = let
      bg0 = "#32302f";
      bg1 = "#3c3836";
      bg2 = "#3c3836";
      bg3 = "#504945";
      bg4 = "#504945";
      fg0 = "#d4be98";
      red = "#ea6962";
      orange = "#e78a4e";
      yellow = "#d8a657";
      bg_visual_yellow = "#574833";
      green = "#a9b665";
      aqua = "#89b482";
      blue = "#7daea3";
      purple = "#d3869b";
      grey0 = "#7c6f64";
      grey2 = "#a89984";
    in {
      "type" = yellow;
      "constant" = purple;
      "constant.numeric" = purple;
      "constant.character.escape" = orange;
      "string" = green;
      "string.regexp" = blue;
      "comment" = grey0;
      "variable" = fg0;
      "variable.builtin" = blue;
      "variable.parameter" = fg0;
      "variable.other.member" = fg0;
      "label" = aqua;
      "punctuation" = grey2;
      "punctuation.delimiter" = grey2;
      "punctuation.bracket" = fg0;
      "keyword" = red;
      "keyword.directive" = aqua;
      "operator" = orange;
      "function" = green;
      "function.builtin" = blue;
      "function.macro" = aqua;
      "tag" = yellow;
      "namespace" = aqua;
      "attribute" = aqua;
      "constructor" = yellow;
      "module" = blue;
      "special" = orange;
      "markup.heading.marker" = grey2;
      "markup.heading.1" = {
        fg = red;
        modifiers = ["bold"];
      };
      "markup.heading.2" = {
        fg = orange;
        modifiers = ["bold"];
      };
      "markup.heading.3" = {
        fg = yellow;
        modifiers = ["bold"];
      };
      "markup.heading.4" = {
        fg = green;
        modifiers = ["bold"];
      };
      "markup.heading.5" = {
        fg = blue;
        modifiers = ["bold"];
      };
      "markup.heading.6" = {
        fg = fg0;
        modifiers = ["bold"];
      };
      "markup.list" = red;
      "markup.bold" = {modifiers = ["bold"];};
      "markup.italic" = {modifiers = ["italic"];};
      "markup.link.url" = {
        fg = blue;
        modifiers = ["underlined"];
      };
      "markup.link.text" = purple;
      "markup.quote" = grey2;
      "markup.raw" = green;

      "diff.plus" = green;
      "diff.delta" = orange;
      "diff.minus" = red;

      "ui.background" = {bg = bg0;};
      "ui.background.separator" = grey0;
      "ui.cursor" = {
        fg = bg0;
        bg = fg0;
      };
      "ui.cursor.match" = {
        fg = orange;
        bg = bg_visual_yellow;
      };
      "ui.cursor.insert" = {
        fg = bg0;
        bg = grey2;
      };
      "ui.cursor.select" = {
        fg = bg0;
        bg = blue;
      };
      "ui.cursorline.primary" = {bg = bg1;};
      "ui.cursorline.secondary" = {bg = bg1;};
      "ui.selection" = {bg = bg3;};
      "ui.linenr" = grey0;
      "ui.linenr.selected" = fg0;
      "ui.statusline" = {
        fg = fg0;
        bg = bg3;
      };
      "ui.statusline.inactive" = {
        fg = grey0;
        bg = bg1;
      };
      "ui.statusline.normal" = {
        fg = bg0;
        bg = fg0;
        modifiers = ["bold"];
      };
      "ui.statusline.insert" = {
        fg = bg0;
        bg = yellow;
        modifiers = ["bold"];
      };
      "ui.statusline.select" = {
        fg = bg0;
        bg = blue;
        modifiers = ["bold"];
      };
      "ui.bufferline" = {
        fg = grey0;
        bg = bg1;
      };
      "ui.bufferline.active" = {
        fg = fg0;
        bg = bg3;
        modifiers = ["bold"];
      };
      "ui.popup" = {
        fg = grey2;
        bg = bg2;
      };
      "ui.window" = {
        fg = grey0;
        bg = bg0;
      };
      "ui.help" = {
        fg = fg0;
        bg = bg2;
      };
      "ui.text" = fg0;
      "ui.text.focus" = fg0;
      "ui.menu" = {
        fg = fg0;
        bg = bg3;
      };
      "ui.menu.selected" = {
        fg = bg0;
        bg = blue;
        modifiers = ["bold"];
      };
      "ui.virtual.whitespace" = {fg = bg4;};
      "ui.virtual.indent-guide" = {fg = bg4;};
      "ui.virtual.ruler" = {bg = bg3;};

      "hint" = blue;
      "info" = aqua;
      "warning" = yellow;
      "error" = red;
      "diagnostic" = {underline = {style = "curl";};};
      "diagnostic.hint" = {
        underline = {
          color = blue;
          style = "dotted";
        };
      };
      "diagnostic.info" = {
        underline = {
          color = aqua;
          style = "dotted";
        };
      };
      "diagnostic.warning" = {
        underline = {
          color = yellow;
          style = "curl";
        };
      };
      "diagnostic.error" = {
        underline = {
          color = red;
          style = "curl";
        };
      };
    };
  };
}