diff --git a/conf/minimaxing.less b/conf/minimaxing.less
index 645a4ce..b95f66c 100755
--- a/conf/minimaxing.less
+++ b/conf/minimaxing.less
@@ -51,7 +51,7 @@ You can create your own manuscript / handwriting font on http://www.myscriptfont
 @MainColor: #549136;
 
 /* For YunoHost config */
-@MainColor: __YNH_COLOR__;
+@MainColor: #__YNH_COLOR__;
 
 
 
diff --git a/manifest.json b/manifest.json
index f414ce3..c77b9d8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -99,14 +99,14 @@
                 "name": "color",
                 "type": "string",
                 "ask": {
-                    "en": "Set default color base",
+                    "en": "Set color base",
                     "fr": "Définissez la couleur de base"
                 },
                 "help": {
-                    "en": "Use hexadecimal value",
-                    "fr": "Utilisez une valeur hexadecimale"
+                    "en": "Use hexadecimal value (6 figures without #)",
+                    "fr": "Utilisez une valeur hexadecimale (6 chiffres sans # devant)"
                 },
-                "example": "#D07732"
+                "example": "D07732"
             }
         ]
     }
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 94c90e8..ebab4f2 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,6 +5,8 @@
 #=================================================
 
 # dependencies used by the app
+pkg_dependencies="node-less"
+
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index 911aade..df8069c 100644
--- a/scripts/install
+++ b/scripts/install
@@ -183,6 +183,10 @@ ynh_add_fpm_config
 cp ../conf/config.php $final_path/
 
 cp ../conf/minimaxing.less $final_path/templates/minimaxing/
+#cp ../conf/minimaxing.css $final_path/templates/minimaxing/
+
+# we already use the default html template
+#cp ../conf/minimaxing.html $final_path/templates/
 
 # Set the password
 ynh_replace_string --match_string="__YNH_PASSWORD__" --replace_string="$password"    --target_file="$final_path/config.php"
@@ -194,7 +198,20 @@ ynh_replace_string --match_string="__YNH_LANG__" --replace_string="$language"
 
 ynh_replace_string --match_string="__YNH_LABEL__" --replace_string="$wiki"    --target_file="$final_path/config.php"
 
-ynh_replace_string --match_string="__YNH_COLOR__" --replace_string="$color"    --target_file="$final_path/templates/minimaxing/minimaxing.less"
+# test if the color was correctly set (6 hexadecimal values)
+if echo "$color" | grep -q -E '[A-Fa-f0-9]{6}'
+then
+	ynh_replace_string --match_string="__YNH_COLOR__" --replace_string="$color"    --target_file="$final_path/templates/minimaxing/minimaxing.less"
+else
+	ynh_replace_string --match_string="__YNH_COLOR__" --replace_string="555555"    --target_file="$final_path/templates/minimaxing/minimaxing.less"
+fi
+
+lessc --js $final_path/templates/minimaxing/minimaxing.less > $final_path/templates/minimaxing/minimaxing.css
+
+
+
+
+#ynh_replace_string --match_string="__YNH_COLOR__" --replace_string="$color"    --target_file="$final_path/templates/minimaxing/minimaxing.css"