diff --git a/packages/gitbook-core/src/components/Application.js b/packages/gitbook-core/src/components/Application.js
new file mode 100644
index 000000000..3414a37a9
--- /dev/null
+++ b/packages/gitbook-core/src/components/Application.js
@@ -0,0 +1,10 @@
+const React = require('react');
+const { InjectedComponent } = require('./components/InjectedComponent');
+
+const Application = React.createClass({
+    render() {
+        return <InjectedComponent matching={{ role: 'Body' }} />
+    }
+});
+
+module.exports = Application;
diff --git a/packages/gitbook-plugin-theme-default/package.json b/packages/gitbook-plugin-theme-default/package.json
new file mode 100644
index 000000000..cbf1516fb
--- /dev/null
+++ b/packages/gitbook-plugin-theme-default/package.json
@@ -0,0 +1,64 @@
+{
+  "name": "gitbook-plugin-theme-default",
+  "description": "Default theme for GitBook",
+  "main": "./index.js",
+  "version": "1.0.5",
+  "engines": {
+    "gitbook": ">=3.0.0"
+  },
+  "dependencies": {},
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/GitbookIO/gitbook.git"
+  },
+  "author": "GitBook Inc. <contact@gitbook.com>",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/GitbookIO/gitbook/issues"
+  },
+  "contributors": [
+    {
+      "name": "Samy Pessé",
+      "email": "samy@gitbook.com"
+    }
+  ],
+  "gitbook": {
+    "properties": {
+      "styles": {
+        "type": "object",
+        "title": "Custom Stylesheets",
+        "properties": {
+          "website": {
+            "title": "Stylesheet for website output",
+            "default": "styles/website.css"
+          },
+          "pdf": {
+            "title": "Stylesheet for PDF output",
+            "default": "styles/pdf.css"
+          },
+          "epub": {
+            "title": "Stylesheet for ePub output",
+            "default": "styles/epub.css"
+          },
+          "mobi": {
+            "title": "Stylesheet for Mobi output",
+            "default": "styles/mobi.css"
+          },
+          "ebook": {
+            "title": "Stylesheet for ebook outputs (PDF, ePub, Mobi)",
+            "default": "styles/ebook.css"
+          },
+          "print": {
+            "title": "Stylesheet to replace default ebook css",
+            "default": "styles/print.css"
+          }
+        }
+      },
+      "showLevel": {
+        "type": "boolean",
+        "title": "Show level indicator in TOC",
+        "default": false
+      }
+    }
+  }
+}
diff --git a/packages/gitbook-plugin-theme-default/src/index.js b/packages/gitbook-plugin-theme-default/src/index.js
new file mode 100644
index 000000000..8c47b38e0
--- /dev/null
+++ b/packages/gitbook-plugin-theme-default/src/index.js
@@ -0,0 +1,16 @@
+const React = require('react');
+const GitBook = require('gitbook-core');
+
+const ThemeBody = React.createClass({
+    render() {
+        return (
+            <div>
+                My Base theme for gitbook
+            </div>
+        );
+    }
+});
+
+module.exports = GitBook.createPlugin((dispatch, state) => {
+    dispatch(GitBook.registerComponent(ThemeBody, { role: 'Body' }));
+});
diff --git a/packages/gitbook/package.json b/packages/gitbook/package.json
index b3f5f1531..7b36ae510 100644
--- a/packages/gitbook/package.json
+++ b/packages/gitbook/package.json
@@ -22,6 +22,7 @@
     "fresh-require": "1.0.3",
     "front-matter": "^2.1.0",
     "gitbook-asciidoc": "1.2.2",
+    "gitbook-core": "*",
     "gitbook-markdown": "2.0.1",
     "gitbook-plugin-fontsettings": "2.0.0",
     "gitbook-plugin-highlight": "2.0.2",