Add support for rgb(a) colors

Author: vvasilev-

index.js

@@ -678,7 +678,18 @@ function getImageUrl(rule) {
  * @return {String|null}
  */
 function getColor(decl) {
-	return decl.value.match(/(?:\s*)(#([0-9a-f]{3}){1,2})/gi);
+	var regexes = ['(#([0-9a-f]{3}){1,2})', 'rgba?\\([^\\)]+\\)'];
+	var matches = null;
+
+	lodash.forEach(regexes, function(regex) {
+		var regex = new RegExp(regex, 'gi');
+
+		if (regex.test(decl.value)) {
+			matches = decl.value.match(regex);
+		}
+	});
+
+	return matches;
 }
 
 /**

test/expectations/style.basic-color.css

@@ -1,2 +1,3 @@
 .selector-a { background-image: url(sprite.basic-color.png); background-position: 0 0; }
 .selector-b { background-image: url(sprite.basic-color.png); background-position: -25px 0; background-color: #000; }
+.selector-c { background-image: url(sprite.basic-color.png); background-position: -25px 0; background-color: rgba(255, 255, 255, .2); }

test/fixtures/style.basic-color.css

@@ -1,2 +1,3 @@
 .selector-a { background-image: url(circle.png); }
 .selector-b { background: #000 url(square.png) no-repeat 0 0; }
+.selector-c { background: rgba(255, 255, 255, .2) url(square.png) no-repeat 0 0; }

test/index.js

@@ -47,7 +47,7 @@ tape('should create a sprite and update references in stylesheet', function(t) {
 		});
 });
 
-tape('should extract hex color as background-color', function(t) {
+tape('should extract hex, rgba and rgb colors as background-color', function(t) {
 	t.plan(2);
 
 	var pluginOpts = {