diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index 1377554..0000000
--- a/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-*.swp
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..e179fe8
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,44 @@
+# Changelog
+All notable changes to this project will be documented in this file. This
+project adheres to [Semantic Versioning].
+
+## 0.1.0 - 2019-03-04
+
+### Added
+
+- Add the all of the default highlight groups for the syntax and for the
+  editor.
+
+- Add the 12-color palette of the Odyssey color scheme.
+
+  |  Color  |     Main usage    | Hue | Saturation | Value |
+  | ------- | ----------------- | --- | ---------- | ----- |
+  | #0c0f0f |         VertSplit | 177 |     20     |    6  |
+  | #161c1c |      'background' | 177 |     20     |   11  |
+  | #1f2928 |        CursorLine | 177 |     25     |   16  |
+  | #283635 |            Folded | 177 |     25     |   21  |
+  | #808c8c |            LineNr | 177 |      9     |   55  |
+  | #aabfbe |      'foreground' | 177 |     11     |   75  |
+  | #62b3a5 |           Keyword | 170 |     45     |   70  |
+  | #b36262 |          ErrorMsg |   0 |     45     |   70  |
+  | #b3a862 |        WarningMsg |  30 |     45     |   70  |
+  | #62b37d |          Function | 140 |     45     |   70  |
+  | #6298b3 |              Type | 200 |     45     |   70  |
+  | #6270b3 |          Constant | 230 |     45     |   70  |
+
+- Add the prerequisites to use the colorscheme.
+
+  + When Vim is used in a terminal, the 'termguicolors' feature must available
+    and it must be set on. In other words, the color scheme must be used as
+    followed.
+
+  ```vim
+  set termguicolors
+  colorscheme odyssey
+  ```
+
+  + A ISO-8613-3 compatible terminal is required.
+
+  + Otherwise, a GUI version of Vim must be used.
+
+[Semantic Versioning]: https://semver.org/spec/v2.0.0.html
diff --git a/colors/odyssey.vim b/colors/odyssey.vim
index d9fafe3..00469df 100644
--- a/colors/odyssey.vim
+++ b/colors/odyssey.vim
@@ -14,7 +14,7 @@
 "
 " Maintainer: Ludovic Koenig <ludovic.koenig@gmail.com>
 " License: MIT
-"
+" Release: 0.1.0
 " Initialisation {{{
 
 if !has('gui_running')
@@ -168,8 +168,8 @@ call s:HL(     'ColorColumn', 'foldedline')
 call s:HL(  'StatusLineTerm', 'cursorline', 'foreground')
 call s:HL('StatusLineTermNC', 'beyondback', 'linenumber')
 call s:HL(      'MatchParen', 'linenumber', 'background')
-"call s:HL(     'ToolbarLine', 'background', 'linenumber') " TODO Use a GUI
-"call s:HL(   'ToolbarButton', 'background', 'linenumber') " TODO Use a GUI
+call s:HL(     'ToolbarLine', 'linenumber', 'linenumber')
+call s:HL(   'ToolbarButton', 'linenumber', 'background')
 call s:HL(         'Comment', 'background', 'linenumber')
 call s:HL(        'Constant', 'background',   'constant')
 call s:HL(         'Special', 'background',    'warning')