diff --git a/src/textual_webterm/cli.py b/src/textual_webterm/cli.py
index f38b964..725fe60 100644
--- a/src/textual_webterm/cli.py
+++ b/src/textual_webterm/cli.py
@@ -119,8 +119,8 @@ def load_app_class(app_path: str):
 @click.option(
     "--theme",
     "-t",
-    help="Terminal color theme (monokai, dark, light, dracula, catppuccin, nord, gruvbox, solarized, tokyo).",
-    default="monokai",
+    help="Terminal color theme (xterm, monokai, dark, light, dracula, catppuccin, nord, gruvbox, solarized, tokyo).",
+    default="xterm",
 )
 @click.option(
     "--font-family",
diff --git a/src/textual_webterm/local_server.py b/src/textual_webterm/local_server.py
index b052c9e..44835ed 100644
--- a/src/textual_webterm/local_server.py
+++ b/src/textual_webterm/local_server.py
@@ -124,7 +124,7 @@ class LocalServer:
         landing_apps: list | None = None,
         compose_mode: bool = False,
         compose_project: str | None = None,
-        theme: str = "monokai",
+        theme: str = "xterm",
         font_family: str | None = None,
         font_size: int = 16,
     ) -> None: