diff --git a/bower.json b/bower.json
index d291663..899c4ee 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "KNACSS",
-  "version": "6.0.3",
+  "version": "6.0.4",
   "homepage": "http://www.knacss.com/",
   "authors": [
     "Raphaël GOETTER, Alsacreations"
diff --git a/changelog.md b/changelog.md
index 3ae968f..f31093c 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,6 @@
+# changelog v6.0.4 (22 novembre 2016)
+- renommage des variables
+
 # changelog v6.0.3 (10 novembre 2016)
 - renommage `grid-item-*` en `item-*` pour éviter [les conflits](https://github.com/alsacreations/KNACSS/issues/222)
 
diff --git a/package.json b/package.json
index 52b3219..39064d5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "knacss",
-  "version": "6.0.3",
+  "version": "6.0.4",
   "homepage": "http://www.knacss.com/",
   "bugs": "https://github.com/alsacreations/KNACSS/issues",
   "author": [
diff --git a/sass/_config/_variables.scss b/sass/_config/_variables.scss
index 5f6fecb..93bff3e 100644
--- a/sass/_config/_variables.scss
+++ b/sass/_config/_variables.scss
@@ -15,15 +15,18 @@ $font-stack-common    : sans-serif !default; // common font
 $font-stack-headings  : sans-serif !default; // headings font
 $font-stack-monospace : consolas, courier, monospace !default; // monospace font
 
-// colors (content and/or backgrounds)
-$base-color     : #000 !default;
-$alpha-color    : #fff !default;
-$beta-color     : #333 !default;
-$gamma-color    : #000 !default;
-$delta-color    : #000 !default;
-$epsilon-color  : #000 !default;
-$zeta-color     : #333 !default;
-$theta-color    : #000 !default;
+// color scheme
+$color1    : #000 !default;
+$color2    : #fff !default;
+$color3    : #333 !default;
+$color4    : #000 !default;
+
+// colors used
+$base-color: $color1;
+$link-color: $color3;
+$base-background : $color2;
+$link-hover-color: $color4;
+
 
 // spacings (choose unit you prefer)
 $tiny-value             : .5rem !default; // tiny value for margins / paddings
diff --git a/sass/library/_base.scss b/sass/library/_base.scss
index 9ae0bab..f3099c2 100644
--- a/sass/library/_base.scss
+++ b/sass/library/_base.scss
@@ -21,16 +21,16 @@ html {
 
 body {
   font-size: $base-font-size;
-  background-color: $alpha-color;
+  background-color: $base-background;
   color: $base-color;
   font-family: $font-stack-common;
   line-height: $line-height;
 }
 
 a {
-  color: $zeta-color;
+  color: $link-color;
   &:hover, &:focus, &:active {
-    color: $base-color;
+    color: $link-hover-color;
   }
 }