diff --git a/MANIFEST.in b/MANIFEST.in
index 3099c98..74b68dd 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,2 +1,3 @@
 include pygal/css/*.css
 include pygal/js/*.js
+include pygal_gen.py
diff --git a/pygal/__init__.py b/pygal/__init__.py
index 00f475c..ef72c4a 100644
--- a/pygal/__init__.py
+++ b/pygal/__init__.py
@@ -16,7 +16,7 @@
 #
 # You should have received a copy of the GNU Lesser General Public License
 # along with pygal. If not, see <http://www.gnu.org/licenses/>.
-__version__ = '0.9.18'
+from pygal._version import __version__
 from pygal.graph.bar import Bar
 from pygal.graph.horizontal import HorizontalBar
 from pygal.graph.stackedbar import StackedBar
diff --git a/pygal/_version.py b/pygal/_version.py
new file mode 100644
index 0000000..47c3353
--- /dev/null
+++ b/pygal/_version.py
@@ -0,0 +1 @@
+__version__ = '0.9.19'
diff --git a/pygal/style.py b/pygal/style.py
index 0edae19..bb7f3dd 100644
--- a/pygal/style.py
+++ b/pygal/style.py
@@ -69,7 +69,7 @@ NeonStyle = Style(
     transition='1s ease-out')
 CleanStyle = Style(
     background='transparent',
-    plot_background='rgba(0, 0, 0, 0.05)',
+    plot_background='rgba(240, 240, 240, 0.7)',
     foreground='rgba(0, 0, 0, 0.9)',
     foreground_light='rgba(0, 0, 0, 0.9)',
     foreground_dark='rgba(0, 0, 0, 0.5)',
diff --git a/pygal/svg.py b/pygal/svg.py
index 18f05d3..0b648ee 100644
--- a/pygal/svg.py
+++ b/pygal/svg.py
@@ -19,6 +19,7 @@
 import os
 from lxml import etree
 from pygal.util import template
+from pygal._version import __version__
 
 
 class Svg(object):
@@ -36,7 +37,8 @@ class Svg(object):
                 'xlink': 'http://www.w3.org/1999/xlink',
             },
             onload="svg_load();")
-        self.root.append(etree.Comment(u'Generated with pygal ©Kozea 2012'))
+        self.root.append(etree.Comment(
+            u'Generated with pygal %s ©Kozea 2012' % __version__))
         self.root.append(etree.Comment(u'http://github.com/Kozea/pygal'))
         self.defs = self.node(tag='defs')
 
diff --git a/setup.py b/setup.py
index 44f058b..d345eb0 100644
--- a/setup.py
+++ b/setup.py
@@ -18,10 +18,11 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with pygal. If not, see <http://www.gnu.org/licenses/>.
 from setuptools import setup, find_packages
+from pygal._version import __version__
 
 setup(
     name="pygal",
-    version='0.9.18',
+    version=__version__,
     description="A python svg graph plotting library",
     author="Kozea",
     url="http://pygal.org/",
@@ -31,7 +32,8 @@ setup(
     packages=find_packages(),
     provides=['pygal'],
     scripts=["pygal_gen.py"],
-    keywords=["svg", "chart", "graph", "diagram", "plot", "histogram", "kiviat"],
+    keywords=[
+        "svg", "chart", "graph", "diagram", "plot", "histogram", "kiviat"],
     tests_require=["pytest", "pyquery", "flask"],
     package_data={'pygal': ['css/*', 'js/*']},
     install_requires=['lxml'],