diff --git a/Network/Wai/Middleware/RequestLogger.hs b/Network/Wai/Middleware/RequestLogger.hs
--- a/Network/Wai/Middleware/RequestLogger.hs
+++ b/Network/Wai/Middleware/RequestLogger.hs
@@ -130,11 +130,10 @@
 -- no black or white which are expected to be existing terminal colors.
 colors0 :: [Color]
 colors0 = [
-    Red 
-  , Green 
-  , Yellow 
-  , Blue 
-  , Magenta 
+    Green
+  , Yellow
+  , Blue
+  , Magenta
   , Cyan
   ]
 
@@ -170,13 +169,11 @@
 detailedMiddleware :: Callback -> Bool -> IO Middleware
 detailedMiddleware cb useColors = do
     getAddColor <-
-        if useColors
-            then do
+        if not useColors then return (return return) else do
                 icolors <- newIORef colors0
                 return $ do
                     color <- liftIO $ atomicModifyIORef icolors rotateColors
                     return $ ansiColor color
-            else return (return return)
     return $ detailedMiddleware' cb getAddColor
 
 ansiColor :: Color -> BS.ByteString -> [BS.ByteString]
@@ -279,7 +276,7 @@
 
 statusBS :: Response -> [BS.ByteString]
 statusBS rsp =
-    if status > 400 then ansiColor Red bs else [bs]
+    if status >= 400 then ansiColor Red bs else [bs]
   where
     bs = pack $ show status
     status = statusCode $ responseStatus rsp
diff --git a/wai-extra.cabal b/wai-extra.cabal
--- a/wai-extra.cabal
+++ b/wai-extra.cabal
@@ -1,5 +1,5 @@
 Name:                wai-extra
-Version:             2.1.1.1
+Version:             2.1.1.2
 Synopsis:            Provides some basic WAI handlers and middleware.
 Description:         The goal here is to provide common features without many dependencies.
 License:             MIT
@@ -27,7 +27,7 @@
                    , time                      >= 1.1.4
                    , network                   >= 2.2.1.5
                    , directory                 >= 1.0.1
-                   , transformers              >= 0.2.2    && < 0.4
+                   , transformers              >= 0.2.2
                    , blaze-builder             >= 0.2.1.4  && < 0.4
                    , http-types                >= 0.7
                    , text                      >= 0.7