replace cn/index.html background image, color etc.

cn/index.html

@@ -89,7 +89,7 @@ var _hmt = _hmt || [];
         <div class="header-content-inner">
             <h1>PaddlePaddle</h1>
             <hr>
-	    <p>开放易用的深度学习平台，工业应用与学术研究并举</p>
+	    <p style="color: #00ffd6">开放易用的深度学习平台，工业应用与学术研究并举</p>
 	    <a href="http://book.paddlepaddle.org" class="btn btn-primary btn-xl page-scroll btn-pd" target="_blank">深度学习入门</a>
 	    <a href="http://www.paddlepaddle.org/doc_cn/" class="btn btn-primary btn-xl page-scroll btn-pd" target="_blank">文档</a>
 	    <a href="https://github.com/baidu/paddle" class="btn btn-primary btn-xl page-scroll btn-pd" target="_blank">代码</a>
@@ -103,7 +103,7 @@ var _hmt = _hmt || [];
             <div class="col-lg-8 col-lg-offset-2 text-center">
                 <h2 class="section-heading">什么是PaddlePaddle</h2>
                 <hr class="light">
-		<p class="text-faded">PaddlePaddle (PArallel Distributed Deep LEarning)是百度研发的深度学习平台，具有易用，高效，灵活和可伸缩等特点，为百度内部多项产品提供深度学习算法支持。</p>
+		<p class="text-faded">PaddlePaddle (PArallel Distributed Deep LEarning)是百度研发的深度学习平台，具有易用，高效，灵活和可伸缩等特点，最近四年里被很多百度产品采用。</p>
 		<!--- <a href="#" class="btn btn-default btn-xl">Get Started!</a> -->
             </div>
         </div>

index.html

@@ -89,7 +89,7 @@ var _hmt = _hmt || [];
         <div class="header-content-inner">
             <h1>PaddlePaddle</h1>
             <hr>
-	    <p>Open and Easy-to-Use Deep Learning Platform for Enterprise and Research</p>
+	    <p style="color: #00ffd6">Open and Easy-to-Use Deep Learning Platform for Enterprise and Research</p>
 	    <a href="http://book.paddlepaddle.org/index.en.html" class="btn btn-primary btn-xl page-scroll btn-pd">Deep Learning 101</a>
 	    <a href="http://paddlepaddle.org/doc/" class="btn btn-primary btn-xl page-scroll btn-pd">Documentation</a>
 	    <a href="https://github.com/baidu/paddle" class="btn btn-primary btn-xl page-scroll btn-pd">Code</a>