diff --git a/README.md b/README.md
index 0d15869..f0db0ee 100644
--- a/README.md
+++ b/README.md
@@ -88,6 +88,28 @@ All available themes are listed in [THEMES.md](./THEMES.md)
 
 Please create a pr if you managed to port a popular theme before me, [here is how to do it](./CONTRIBUTING.md).
 
+<details>
+<summary>Tweeking themes</summary>
+
+You like a theme but would like to tweek some colors.
+You can do that in your config easily.
+
+Example:
+```lua
+local custom_gruvbox = require'lualine.themes.gruvbox'
+
+-- Chnage the background of lualine_c section for normal mode
+custom_gruvbox.normal.c.bg = '#112233' -- rgb colors are supported
+
+require'lualine'.setup{
+  options = { theme  = custom_gruvbox },
+  ...
+}
+```
+You can checkout structure of a lualine theme [here](https://github.com/hoob3rt/lualine.nvim/blob/master/CONTRIBUTING.md#adding-a-theme)
+
+</details>
+
 ### Changing separators
 Lualine defines two kinds of seperators. One is for sections and other is for components. Default section seperators are '', '' and component separators are '', ''.
 They require powerline patched fonts. But you can easily change yours to something else like below
diff --git a/doc/lualine.txt b/doc/lualine.txt
index c7c28b4..81a626f 100644
--- a/doc/lualine.txt
+++ b/doc/lualine.txt
@@ -111,6 +111,25 @@ All available themes are listed in THEMES.md (./THEMES.md)
 Please create a pr if you managed to port a popular theme before me, here is
 how to do it (./CONTRIBUTING.md).
 
+Tweeking themes~
+
+You like a theme but would like to tweek some colors.
+You can do that in your config easily.
+
+Example:
+>
+    local custom_gruvbox = require'lualine.themes.gruvbox'
+
+    -- Chnage the background of lualine_c section for normal mode
+    custom_gruvbox.normal.c.bg = '#112233' -- rgb colors are supported
+
+    require'lualine'.setup{
+      options = { theme  = custom_gruvbox },
+      ...
+    }
+<
+You can checkout structure of a lualine theme [here](https://github.com/hoob3rt/lualine.nvim/blob/master/CONTRIBUTING.md#adding-a-theme)
+
 CHANGING SEPARATOR IN SECTION                       *lualine_changing_separator*
 
 Lualine defines two kinds of seperators. One is for sections and other is