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..9cf090d12c48dbeb9cace53f5b35426528beee22 100644
--- a/demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java
+++ b/demos/src/main/java/org/chromium/customtabsdemos/CustomTabActivityHelper.java
@@ -52,13 +52,26 @@ 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
+    /**
+     * @see #openCustomTab(Activity, CustomTabsIntent, Uri, CustomTabFallback)
+     * Same as the previous method, but is able to specify which package the user wants to use.
+     */
+    public static void openCustomTab(Activity activity,
+                                     CustomTabsIntent customTabsIntent,
+                                     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);