Extract color

searx/static/themes/courgette/less/style.less

@@ -1,5 +1,6 @@
 
 @color-main: #3498DB;
+@color-focus: #0665A2;
 @color-other-links: #666;
 @color-fonts: #333;
 @center-width: 70em;
@@ -241,7 +242,7 @@ a {
 
 #search_submit:hover,
 #search_submit:focus {
-	background-color: #0665A2;
+	background-color: @color-focus;
 }
 
 #sidebar {
@@ -311,7 +312,7 @@ a {
 #sidebar input[type="submit"]:hover,
 #sidebar input[type="submit"]:focus {
 	color: #FFF;
-	background-color: #0665A2;
+	background-color: @color-focus;
 }
 
 #results {
@@ -433,7 +434,7 @@ input[type="submit"] {
 
 input[type="submit"]:hover,
 input[type="submit"]:focus {
-	background: #0665A2;
+	background: @color-focus;
 }
 
 .row {