diff --git a/logs/color.go b/logs/color.go
new file mode 100644
index 00000000..fb21b42e
--- /dev/null
+++ b/logs/color.go
@@ -0,0 +1,28 @@
+// Copyright 2014 beego Author. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build !windows
+
+package logs
+
+import "io"
+
+type ansiColorWriter struct {
+	w    io.Writer
+	mode outputMode
+}
+
+func (cw *ansiColorWriter) Write(p []byte) (int, error) {
+	return cw.w.Write(p)
+}
\ No newline at end of file
diff --git a/logs/color_windows.go b/logs/color_windows.go
index f6c6cad3..47f7b24e 100644
--- a/logs/color_windows.go
+++ b/logs/color_windows.go
@@ -25,7 +25,6 @@ import (
 )
 
 type (
-	outputMode 	int
 	csiState 	int
 	parseResult int
 )
@@ -426,36 +425,4 @@ func (cw *ansiColorWriter) Write(p []byte) (int, error) {
 	}
 
 	return r, err
-}
-
-// DiscardNonColorEscSeq supports the divided color escape sequence.
-// But non-color escape sequence is not output.
-// Please use the OutputNonColorEscSeq If you want to output a non-color
-// escape sequences such as ncurses. However, it does not support the divided
-// color escape sequence.
-const (
-	_ outputMode = iota
-	DiscardNonColorEscSeq
-	OutputNonColorEscSeq
-)
-
-// NewAnsiColorWriter creates and initializes a new ansiColorWriter
-// using io.Writer w as its initial contents.
-// In the console of Windows, which change the foreground and background
-// colors of the text by the escape sequence.
-// In the console of other systems, which writes to w all text.
-func NewAnsiColorWriter(w io.Writer) io.Writer {
-	return NewModeAnsiColorWriter(w, DiscardNonColorEscSeq)
-}
-
-// NewModeAnsiColorWriter create and initializes a new ansiColorWriter
-// by specifying the outputMode.
-func NewModeAnsiColorWriter(w io.Writer, mode outputMode) io.Writer {
-	if _, ok := w.(*ansiColorWriter); !ok {
-		return &ansiColorWriter{
-			w:    w,
-			mode: mode,
-		}
-	}
-	return w
 }
\ No newline at end of file
diff --git a/logs/logger.go b/logs/logger.go
index 499a5b39..d74df7bf 100644
--- a/logs/logger.go
+++ b/logs/logger.go
@@ -38,18 +38,54 @@ func (lg *logWriter) println(when time.Time, msg string) {
 	lg.Unlock()
 }
 
-const y1 = `0000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999`
-const y2 = `0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789`
-const mo1 = `000000000111`
-const mo2 = `123456789012`
-const d1 = `0000000001111111111222222222233`
-const d2 = `1234567890123456789012345678901`
-const h1 = `000000000011111111112222`
-const h2 = `012345678901234567890123`
-const mi1 = `000000000011111111112222222222333333333344444444445555555555`
-const mi2 = `012345678901234567890123456789012345678901234567890123456789`
-const s1 = `000000000011111111112222222222333333333344444444445555555555`
-const s2 = `012345678901234567890123456789012345678901234567890123456789`
+type outputMode int
+
+// DiscardNonColorEscSeq supports the divided color escape sequence.
+// But non-color escape sequence is not output.
+// Please use the OutputNonColorEscSeq If you want to output a non-color
+// escape sequences such as ncurses. However, it does not support the divided
+// color escape sequence.
+const (
+	_ outputMode = iota
+	DiscardNonColorEscSeq
+	OutputNonColorEscSeq
+)
+
+// NewAnsiColorWriter creates and initializes a new ansiColorWriter
+// using io.Writer w as its initial contents.
+// In the console of Windows, which change the foreground and background
+// colors of the text by the escape sequence.
+// In the console of other systems, which writes to w all text.
+func NewAnsiColorWriter(w io.Writer) io.Writer {
+	return NewModeAnsiColorWriter(w, DiscardNonColorEscSeq)
+}
+
+// NewModeAnsiColorWriter create and initializes a new ansiColorWriter
+// by specifying the outputMode.
+func NewModeAnsiColorWriter(w io.Writer, mode outputMode) io.Writer {
+	if _, ok := w.(*ansiColorWriter); !ok {
+		return &ansiColorWriter{
+			w:    w,
+			mode: mode,
+		}
+	}
+	return w
+}
+
+const (
+	y1 = `0000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999`
+	y2 = `0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789`
+	mo1 = `000000000111`
+	mo2 = `123456789012`
+	d1 = `0000000001111111111222222222233`
+	d2 = `1234567890123456789012345678901`
+	h1 = `000000000011111111112222`
+	h2 = `012345678901234567890123`
+	mi1 = `000000000011111111112222222222333333333344444444445555555555`
+	mi2 = `012345678901234567890123456789012345678901234567890123456789`
+	s1 = `000000000011111111112222222222333333333344444444445555555555`
+	s2 = `012345678901234567890123456789012345678901234567890123456789`
+)
 
 func formatTimeHeader(when time.Time) ([]byte, int) {
 	y, mo, d := when.Date()
@@ -149,4 +185,4 @@ func W32Debug(msg string) {
 	w := NewAnsiColorWriter(os.Stdout)
 
 	fmt.Fprintf(w, "[beego] %v %s\n", current.Format("2006/01/02 - 15:04:05"), msg)
-}
+}
\ No newline at end of file
diff --git a/logs/logger_test.go b/logs/logger_test.go
index 4627853a..c65d70d5 100644
--- a/logs/logger_test.go
+++ b/logs/logger_test.go
@@ -17,6 +17,7 @@ package logs
 import (
 	"testing"
 	"time"
+	"bytes"
 )
 
 func TestFormatHeader_0(t *testing.T) {
@@ -55,3 +56,20 @@ func TestFormatHeader_1(t *testing.T) {
 		tm = tm.Add(dur)
 	}
 }
+
+func TestNewAnsiColor1(t *testing.T) {
+	inner := bytes.NewBufferString("")
+	w := NewAnsiColorWriter(inner)
+	if w == inner {
+		t.Errorf("Get %#v, want %#v", w, inner)
+	}
+}
+
+func TestNewAnsiColor2(t *testing.T) {
+	inner := bytes.NewBufferString("")
+	w1 := NewAnsiColorWriter(inner)
+	w2 := NewAnsiColorWriter(w1)
+	if w1 != w2 {
+		t.Errorf("Get %#v, want %#v", w1, w2)
+	}
+}
\ No newline at end of file