Improve project sidebutton colors

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/sections/projects.scss

@@ -197,8 +197,8 @@ ul.nav.nav-projects-tabs {
       white-space: normal;
       text-align: left;
       padding: 10px 15px;
-      background-color: #F1f1f1;
-      border-color: #EEE;
+      background-color: #F9F9F9;
+      border-color: #DDD;
 
       &:hover {
         background-color: #eee;