color, package and action bar configuration.

demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java

Index: demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java
diff --git a/demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java b/demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java
index 3a6175dfcb855a0e4a230a7c3564ee42ced73e19..151b0abaad3fbaaa01abfd9655cbdb3364773daa 100644
--- a/demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java
+++ b/demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java
@@ -52,13 +52,22 @@ public class CustomTabActivityHelper implements ServiceConnectionCallback {
                                      CustomTabsIntent customTabsIntent,
                                      Uri uri,
                                      CustomTabFallback fallback) {
-        String packageName = CustomTabsHelper.getPackageNameToUse(activity);
+        openCustomTab(activity, customTabsIntent, uri, fallback, null);
+    }
 
-        //If we cant find a package name, it means theres no browser that supports
-        //Chrome Custom Tabs installed. So, we fallback to the webview
+    public static void openCustomTab(Activity activity,
+                                     CustomTabsIntent customTabsIntent,

[Ian Wen, 2016/03/16 01:35:30]

Public methods should have javadocs

[BigBossZhiling, 2016/03/18 00:59:07]

Done.

+                                     Uri uri,
+                                     CustomTabFallback fallback,
+                                     String packageName) {
         if (packageName == null) {
-            if (fallback != null) {
-                fallback.openUri(activity, uri);
+            packageName = CustomTabsHelper.getPackageNameToUse(activity);
+            //If we cant find a package name, it means theres no browser that supports
+            //Chrome Custom Tabs installed. So, we fallback to the webview
+            if (packageName == null) {
+                if (fallback != null) {
+                    fallback.openUri(activity, uri);
+                }
             }
         } else {
             customTabsIntent.intent.setPackage(packageName);