diff --git a/powerline/ext/terminal/segments/__init__.py b/powerline/ext/terminal/segments/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/powerline/ext/terminal/segments/core.py b/powerline/ext/terminal/segments/core.py
new file mode 100644
index 00000000..c42c5faf
--- /dev/null
+++ b/powerline/ext/terminal/segments/core.py
@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+
+import os
+
+
+def user_name():
+	user_name = os.environ.get('USER')
+	return {
+		'contents': user_name,
+		'highlight': 'user_name' if user_name != 'root' else ['user_name_root', 'user_name'],
+	}
diff --git a/powerline/ext/tmux/segments/__init__.py b/powerline/ext/tmux/segments/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/powerline/ext/tmux/segments/core.py b/powerline/ext/tmux/segments/core.py
new file mode 100644
index 00000000..c42c5faf
--- /dev/null
+++ b/powerline/ext/tmux/segments/core.py
@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+
+import os
+
+
+def user_name():
+	user_name = os.environ.get('USER')
+	return {
+		'contents': user_name,
+		'highlight': 'user_name' if user_name != 'root' else ['user_name_root', 'user_name'],
+	}
diff --git a/powerline/themes/terminal/default.json b/powerline/themes/terminal/default.json
new file mode 100644
index 00000000..05013239
--- /dev/null
+++ b/powerline/themes/terminal/default.json
@@ -0,0 +1,10 @@
+{
+	"name": "default",
+	"segments": {
+		"left": [
+			{
+				"name": "user_name"
+			}
+		]
+	}
+}
diff --git a/powerline/themes/tmux/default.json b/powerline/themes/tmux/default.json
new file mode 100644
index 00000000..05013239
--- /dev/null
+++ b/powerline/themes/tmux/default.json
@@ -0,0 +1,10 @@
+{
+	"name": "default",
+	"segments": {
+		"left": [
+			{
+				"name": "user_name"
+			}
+		]
+	}
+}