diff --git a/doc/zenbones.txt b/doc/zenbones.txt
index 180e80c..e63e6fc 100644
--- a/doc/zenbones.txt
+++ b/doc/zenbones.txt
@@ -22,15 +22,6 @@ Just apply the colorscheme as usual:
 >
     colorscheme zenbones " light
     colorscheme zenflesh " dark
-<
-
-
-If you want to make use of the lua version:
-
->
-    " Requires `neovim` and `rktjmp/lush.nvim` installed
-    colorscheme zenbones-lush
-    colorscheme zenflesh-lush
     
     " https://neovim.io flavor
     colorscheme neobones
@@ -44,7 +35,7 @@ or customizing the colors to your likings.
 
 CONFIGURATION                                         *zenbones-configuration*
 
-Configuration is only available for `zenbones-lush` and `zenflesh-lush`.
+Configuration is only available for neovim.
 
                                                *zenbones-g:zenbones_lightness*
 
@@ -117,6 +108,37 @@ colors in lua:
 <
 
 
+Here’s an example of how to extend/override some highlights:
+
+>
+    local function customize_zenbones()
+        if vim.g.colors_name ~= "zenbones" then
+            return
+        end
+    
+        local lush = require "lush"
+        local base = require "zenbones"
+    
+        local specs = lush.parse(function()
+            return {
+                TabLine { base.TabLine, gui = "italic" }, -- setting gui to "italic"
+            }
+        end)
+    
+        lush.apply(lush.compile(specs))
+    end
+    
+    return customize_zenbones
+<
+
+
+And then somewhere in your config:
+
+>
+    autocmd VimEnter,ColorScheme * lua require("customize_zenbones")()
+<
+
+
 See also Lush’s documentation
 <https://github.com/rktjmp/lush.nvim#advanced-usage> for more options.
 
@@ -133,77 +155,65 @@ contains the following:
 >
     vim.g.colors_name = "gruvbones"
     
-    -- let's base bg=dark, bg=light on zenflesh, zenbones specs respectively
-    local base_name = vim.opt.background:get() == "dark" and "zenflesh" or "zenbones"
-    
-    -- reset base palette and specs
-    package.loaded[base_name .. ".palette"] = nil
-    package.loaded[base_name] = nil
-    
     local lush = require "lush"
-    local hsl = lush.hsl
+    local hsluv = lush.hsluv -- human-friendly hsl
+    local util = require "zenbones.util"
     
-    -- modify base palette (before requiring specs)
-    -- and we can also define our own
-    -- note: non-exhaustive copy of gruvbox palette. Ref: https://github.com/gruvbox-community/gruvbox#palette
-    local base = require(base_name .. ".palette")
-    local gruv
+    -- let's base bg=dark, bg=light on zenflesh, zenbones specs respectively
+    local base_name = util.bg_to_base_name()
+    
+    -- create a palette. Use palette_extend to fill unspecified colors
+    -- based on https://github.com/gruvbox-community/gruvbox#palette
+    local palette
     if base_name == "zenbones" then
-        base.bg = hsl "#fbf1c7"
-        base.fg = hsl "#3c3836"
-        gruv = {
-            gray = hsl "#7c6f64",
-            fg0 = hsl "#282828",
-            fg1 = hsl "#3c3836",
-            fg2 = hsl "#504945",
-            fg3 = hsl "#665c54",
-            fg4 = hsl "#7c6f64",
-        }
+        palette = util.palette_extend({
+            bg = hsluv "#fbf1c7",
+            fg = hsluv "#3c3836",
+            rose = hsluv "#9d0006",
+            leaf = hsluv "#79740e",
+            wood = hsluv "#b57614",
+            water = hsluv "#076678",
+            blossom = hsluv "#8f3f71",
+            sky = hsluv "#427b58",
+        }, "zenbones")
     else
-        base.bg = hsl "#282828"
-        base.fg = hsl "#ebdbb2"
-        gruv = {
-            gray = hsl "#a89984",
-            fg0 = hsl "#fbf1c7",
-            fg1 = hsl "#ebdbb2",
-            fg2 = hsl "#d5c4a1",
-            fg3 = hsl "#d5c4a1",
-            fg4 = hsl "#a89984",
-        }
+        palette = util.palette_extend({
+            bg = hsluv "#282828",
+            fg = hsluv "#ebdbb2",
+            rose = hsluv "#fb4934",
+            leaf = hsluv "#b8bb26",
+            wood = hsluv "#fabd2f",
+            water = hsluv "#83a598",
+            blossom = hsluv "#d3869b",
+            sky = hsluv "#83c07c",
+        }, "zenflesh")
     end
     
-    base.rose = hsl "#cc241d"
-    base.leaf = hsl "#98971a"
-    base.wood = hsl "#d79921"
-    base.water = hsl "#458588"
-    base.blossom = hsl "#b16286"
-    base.sky = hsl "#689d6a"
+    -- generate the lush specs using the generator util
+    local generator = require(base_name .. ".specs")
+    local base_specs = generator.generate(palette, generator.get_global_config(base_name))
     
-    -- extend specs using Lush
-    local theme = require(base_name)
-    local specs = lush.extends({ theme }).with(function()
+    -- optionally extend specs using Lush
+    local specs = lush.extends({ base_specs }).with(function()
         return {
-            Constant { fg = gruv.fg4, gui = "italic" },
-            Identifier { fg = gruv.fg2, gui = "italic" },
-            Special { fg = gruv.fg3, gui = "bold" },
-            Delimiter { fg = gruv.gray },
-            Comment { fg = gruv.gray, gui = "italic" },
-            LineNr { fg = Comment.fg },
+            Statement { base_specs.Statement, fg = palette.rose },
+            Special { fg = palette.water },
+            Type { fg = palette.sky, gui = "italic" },
         }
     end)
     
-    -- apply terminal colors
-    require(base_name .. ".term").setup()
-    
     -- include our theme file and pass it to lush to apply
     lush(specs)
+    
+    -- optionally, set term colors
+    require("zenbones.term").apply_colors(palette)
 <
 
 
 And there you have it. Just call `colorscheme gruvbones` to use your new
 colorscheme. It respects `&background` and other configurations too.
 
-Also checkout the neovim <../colors/neovim.lua> and rosebones
+Also checkout the neobones <../colors/neobones.lua> and rosebones
 <../colors/rosebones.lua> colorscheme for a similar and complete example.
 
 Generated by panvimdoc <https://github.com/kdheepak/panvimdoc>