diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 Hablog
 ======
 
+[![Hackage](https://img.shields.io/hackage/v/hablog.svg)](http://hackage.haskell.org/package/hablog) [![CircleCI](https://circleci.com/gh/soupi/hablog.svg?style=svg)](https://circleci.com/gh/soupi/hablog)
+
 A simple blog platform with tags. Made with Haskell and Scotty.
 
 Hablog will read posts written in Markdown from the `_posts` folder.
diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -32,12 +32,20 @@
               defaultConfig
         _ ->
           putStrLn usageMsgTLS
-    [portStr] ->
-      case reads portStr of
-        [(port, "")] ->
-          run defaultConfig port
-        _ ->
-          putStrLn usageMsg
+
+    [themeStr]
+      | Just theme <- lookup themeStr themes ->
+        run defaultConfig { blogTheme = theme } defaultPort
+
+    [portStr]
+      | [(port, "")] <- reads portStr ->
+        run defaultConfig port
+
+    [themeStr,portStr]
+      | Just theme <- lookup themeStr themes
+      , [(port, "")] <- reads portStr ->
+        run defaultConfig { blogTheme = theme } port
+
     _ ->
       putStrLn usageMsg
 
diff --git a/hablog.cabal b/hablog.cabal
--- a/hablog.cabal
+++ b/hablog.cabal
@@ -1,5 +1,5 @@
 Name:                hablog
-Version:             0.4.0
+Version:             0.4.1
 Synopsis:            A blog system
 Description:         blog system with tags
 License:             MIT
diff --git a/src/Web/Hablog/Config.hs b/src/Web/Hablog/Config.hs
--- a/src/Web/Hablog/Config.hs
+++ b/src/Web/Hablog/Config.hs
@@ -55,3 +55,9 @@
 lightTheme :: Theme
 lightTheme  = Theme "/static/css/light.css" "/static/highlight/styles/docco.css"
 
+
+themes :: [(String, Theme)]
+themes =
+  [("dark",  darkTheme)
+  ,("light", lightTheme)
+  ]
diff --git a/src/Web/Hablog/Html.hs b/src/Web/Hablog/Html.hs
--- a/src/Web/Hablog/Html.hs
+++ b/src/Web/Hablog/Html.hs
@@ -14,28 +14,33 @@
 import qualified Web.Hablog.Post as Post
 import qualified Web.Hablog.Page as Page
 
-template :: Config -> T.Text -> H.Html -> H.Html
-template cfg title container =
+template :: Config -> Bool -> T.Text -> H.Html -> H.Html
+template cfg highlight title container =
   H.docTypeHtml $ do
     H.head $ do
       H.title (H.toHtml (T.concat [blogTitle cfg, " - ", title]))
       H.link ! A.rel "stylesheet" ! A.type_ "text/css" ! A.href (bgTheme $ blogTheme cfg)
-      H.link ! A.rel "stylesheet" ! A.type_ "text/css" ! A.href (codeTheme $ blogTheme cfg)
+      if highlight
+        then H.link ! A.rel "stylesheet" ! A.type_ "text/css" ! A.href (codeTheme $ blogTheme cfg)
+        else mempty
     H.body $ do
       H.div ! A.class_ "container" $ do
         logo cfg
         H.div ! A.class_ "maincontainer" $ container
         footer
-      H.script ! A.src "static/highlight/highlight.pack.js" $ ""
-      H.script "hljs.initHighlightingOnLoad();"
-
+      if highlight
+        then do
+          H.script ! A.src "static/highlight/highlight.pack.js" $ ""
+          H.script "hljs.initHighlightingOnLoad();"
+        else
+          mempty
 
 mainTemplate :: H.Html -> H.Html
 mainTemplate = H.article ! A.class_ "content"
 
 notFoundPage :: Config -> H.Html
 notFoundPage cfg =
-  template cfg "Not Found" $ mainTemplate $ do
+  template cfg False "Not Found" $ mainTemplate $ do
     H.h1 "Not found"
     H.p "The page you search for is not available."
 
@@ -49,7 +54,7 @@
 
 errorPage :: Config -> T.Text -> String -> H.Html
 errorPage cfg ttl msg =
-  template cfg ttl $ do
+  template cfg False ttl $ do
     H.h2 "Something Went Wrong..."
     H.p $ H.toHtml msg
 
@@ -73,7 +78,7 @@
   H.a ! A.href (fromString $ T.unpack ("/" `T.append` Post.getPath post)) $ H.toHtml $ Post.title post
 
 postPage :: Config -> Post.Post -> H.Html
-postPage cfg post = template cfg (Post.title post) $
+postPage cfg post = template cfg True (Post.title post) $
     H.article ! A.class_ "post" $ do
       H.div ! A.class_ "postTitle" $ do
         H.a ! A.href (fromString $ T.unpack ("/" `T.append` Post.getPath post)) $ H.h2 ! A.class_ "postHeader" $ H.toHtml (Post.title post)
@@ -86,7 +91,7 @@
       H.div ! A.class_ "postContent" $ Post.content post
 
 pagePage :: Config -> Page.Page -> H.Html
-pagePage cfg page = template cfg (Page.getPageName page) $
+pagePage cfg page = template cfg True (Page.getPageName page) $
     H.article ! A.class_ "post" $ do
       H.div ! A.class_ "postTitle" $
         H.a ! A.href (fromString (Page.getPageURL page)) $ H.h2 ! A.class_ "postHeader" $ H.toHtml (Page.getPageName page)
diff --git a/src/Web/Hablog/Present.hs b/src/Web/Hablog/Present.hs
--- a/src/Web/Hablog/Present.hs
+++ b/src/Web/Hablog/Present.hs
@@ -32,7 +32,7 @@
   tgs <- liftIO getTagList
   auths <- liftIO getAuthorsList
   cfg <- getCfg
-  html $ HR.renderHtml $ template cfg "Posts" $ do
+  html $ HR.renderHtml $ template cfg False "Posts" $ do
     H.aside ! A.class_ "aside" $ do
       presentPagesList allPages
       H.div ! A.class_ "AllAuthorsList" $ do
@@ -47,7 +47,7 @@
 showPostsWhere test = do
   cfg <- getCfg
   allPosts <- liftIO getAllPosts
-  html $ HR.renderHtml $ template cfg "Posts" $
+  html $ HR.renderHtml $ template cfg False "Posts" $
     postsListHtml $ filter test allPosts
 
 presentPagesList :: [Page.Page] -> H.Html
@@ -91,7 +91,7 @@
 presentTags = do
   cfg <- getCfg
   tags <- liftIO getTagList
-  html . HR.renderHtml $ template cfg "Posts Tags" tags
+  html . HR.renderHtml $ template cfg False "Posts Tags" tags
 
 getTagList :: IO H.Html
 getTagList = pure . tagsList . getAllTags =<< getAllPosts
@@ -107,19 +107,19 @@
 presentTag tag = do
   cfg <- getCfg
   posts <- liftIO getAllPosts
-  html . HR.renderHtml . template cfg tag $ postsListHtml $ filter (hasTag tag) posts
+  html . HR.renderHtml . template cfg False tag $ postsListHtml $ filter (hasTag tag) posts
 
 presentAuthors :: HablogAction ()
 presentAuthors = do
   cfg <- getCfg
   authors <- liftIO getAuthorsList
-  html . HR.renderHtml $ template cfg "Posts Authors" authors
+  html . HR.renderHtml $ template cfg False "Posts Authors" authors
 
 presentAuthor :: T.Text -> HablogAction ()
 presentAuthor auth = do
   cfg <- getCfg
   posts <- liftIO getAllPosts
-  html . HR.renderHtml . template cfg auth . postsListHtml $ filter (hasAuthor auth) posts
+  html . HR.renderHtml . template cfg False auth . postsListHtml $ filter (hasAuthor auth) posts
 
 getPageFromFile :: T.Text -> IO (Maybe Page.Page)
 getPageFromFile title = do
