diff --git a/cmd/tilemapper/main.go b/cmd/tilemapper/main.go
index 0d1de61..8608811 100644
--- a/cmd/tilemapper/main.go
+++ b/cmd/tilemapper/main.go
@@ -45,9 +45,9 @@ func main() {
 	flag.Parse()
 
 	var err error
-	var colors *Colors
+	var colors *common.Colors
 
-	if colors, err = ParseColors(colorsfile); err != nil {
+	if colors, err = common.ParseColors(colorsfile); err != nil {
 		log.Fatalf("Cannot open color file: %s", err)
 	}
 
diff --git a/cmd/tilemapper/colors.txt b/colors.txt
similarity index 100%
rename from cmd/tilemapper/colors.txt
rename to colors.txt
diff --git a/cmd/tilemapper/colors.go b/common/colors.go
similarity index 98%
rename from cmd/tilemapper/colors.go
rename to common/colors.go
index 90f3a9d..3fdb858 100644
--- a/cmd/tilemapper/colors.go
+++ b/common/colors.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
-package main
+package common
 
 import (
 	"bufio"