diff --git a/src/asciicast.rs b/src/asciicast.rs
index e516360..b8bb3de 100644
--- a/src/asciicast.rs
+++ b/src/asciicast.rs
@@ -336,7 +336,7 @@ mod tests {
         env.insert("SHELL".to_owned(), "/usr/bin/fish".to_owned());
         env.insert("TERM".to_owned(), "xterm256-color".to_owned());
 
-        let theme = TtyTheme {
+        let tty_theme = TtyTheme {
             fg: RGB8::new(0, 1, 2),
             bg: RGB8::new(0, 100, 200),
             palette: vec![
@@ -365,7 +365,7 @@ mod tests {
             command: Some("/bin/bash".to_owned()),
             title: Some("Demo".to_owned()),
             env: Some(env),
-            term_theme: Some(theme),
+            term_theme: Some(tty_theme),
             ..Default::default()
         };
 
diff --git a/src/asciicast/v2.rs b/src/asciicast/v2.rs
index cbd97aa..9a1f3e4 100644
--- a/src/asciicast/v2.rs
+++ b/src/asciicast/v2.rs
@@ -371,24 +371,24 @@ impl From<&Header> for V2Header {
 }
 
 impl From<&TtyTheme> for V2Theme {
-    fn from(theme: &TtyTheme) -> Self {
-        let palette = theme.palette.iter().copied().map(RGB8).collect();
+    fn from(tty_theme: &TtyTheme) -> Self {
+        let palette = tty_theme.palette.iter().copied().map(RGB8).collect();
 
         V2Theme {
-            fg: RGB8(theme.fg),
-            bg: RGB8(theme.bg),
+            fg: RGB8(tty_theme.fg),
+            bg: RGB8(tty_theme.bg),
             palette: V2Palette(palette),
         }
     }
 }
 
 impl From<&V2Theme> for TtyTheme {
-    fn from(theme: &V2Theme) -> Self {
-        let palette = theme.palette.0.iter().map(|c| c.0).collect();
+    fn from(tty_theme: &V2Theme) -> Self {
+        let palette = tty_theme.palette.0.iter().map(|c| c.0).collect();
 
         TtyTheme {
-            fg: theme.fg.0,
-            bg: theme.bg.0,
+            fg: tty_theme.fg.0,
+            bg: tty_theme.bg.0,
             palette,
         }
     }
diff --git a/src/asciicast/v3.rs b/src/asciicast/v3.rs
index 81cf9b4..4963e0b 100644
--- a/src/asciicast/v3.rs
+++ b/src/asciicast/v3.rs
@@ -425,24 +425,24 @@ impl From<&Header> for V3Header {
 }
 
 impl From<&TtyTheme> for V3Theme {
-    fn from(theme: &TtyTheme) -> Self {
-        let palette = theme.palette.iter().copied().map(RGB8).collect();
+    fn from(tty_theme: &TtyTheme) -> Self {
+        let palette = tty_theme.palette.iter().copied().map(RGB8).collect();
 
         V3Theme {
-            fg: RGB8(theme.fg),
-            bg: RGB8(theme.bg),
+            fg: RGB8(tty_theme.fg),
+            bg: RGB8(tty_theme.bg),
             palette: V3Palette(palette),
         }
     }
 }
 
 impl From<&V3Theme> for TtyTheme {
-    fn from(theme: &V3Theme) -> Self {
-        let palette = theme.palette.0.iter().map(|c| c.0).collect();
+    fn from(tty_theme: &V3Theme) -> Self {
+        let palette = tty_theme.palette.0.iter().map(|c| c.0).collect();
 
         TtyTheme {
-            fg: theme.fg.0,
-            bg: theme.bg.0,
+            fg: tty_theme.fg.0,
+            bg: tty_theme.bg.0,
             palette,
         }
     }
diff --git a/src/file_writer.rs b/src/file_writer.rs
index b0613fa..eaf440a 100644
--- a/src/file_writer.rs
+++ b/src/file_writer.rs
@@ -35,7 +35,7 @@ impl session::OutputStarter for FileWriterStarter {
         mut self: Box<Self>,
         time: SystemTime,
         tty_size: TtySize,
-        theme: Option<TtyTheme>,
+        tty_theme: Option<TtyTheme>,
     ) -> io::Result<Box<dyn session::Output>> {
         let timestamp = time.duration_since(UNIX_EPOCH).unwrap().as_secs();
 
@@ -44,7 +44,7 @@ impl session::OutputStarter for FileWriterStarter {
             term_rows: tty_size.1,
             term_type: self.metadata.term_type,
             term_version: self.metadata.term_version,
-            term_theme: theme,
+            term_theme: tty_theme,
             timestamp: Some(timestamp),
             idle_time_limit: self.metadata.idle_time_limit,
             command: self.metadata.command.as_ref().cloned(),
diff --git a/src/pty.rs b/src/pty.rs
index dcbd062..82ce47d 100644
--- a/src/pty.rs
+++ b/src/pty.rs
@@ -25,7 +25,7 @@ use crate::tty::{Tty, TtySize, TtyTheme};
 type ExtraEnv = HashMap<String, String>;
 
 pub trait HandlerStarter<H: Handler> {
-    fn start(self, tty_size: TtySize, theme: Option<TtyTheme>) -> H;
+    fn start(self, tty_size: TtySize, tty_theme: Option<TtyTheme>) -> H;
 }
 
 pub trait Handler {
@@ -396,7 +396,7 @@ mod tests {
     }
 
     impl HandlerStarter<TestHandler> for TestHandlerStarter {
-        fn start(self, tty_size: TtySize, _theme: Option<TtyTheme>) -> TestHandler {
+        fn start(self, tty_size: TtySize, _tty_theme: Option<TtyTheme>) -> TestHandler {
             TestHandler {
                 tty_size,
                 output: Vec::new(),
diff --git a/src/session.rs b/src/session.rs
index 4fe006d..d37a624 100644
--- a/src/session.rs
+++ b/src/session.rs
@@ -23,7 +23,7 @@ pub trait OutputStarter {
         self: Box<Self>,
         time: SystemTime,
         tty_size: TtySize,
-        theme: Option<TtyTheme>,
+        tty_theme: Option<TtyTheme>,
     ) -> io::Result<Box<dyn Output>>;
 }
 
diff --git a/src/stream.rs b/src/stream.rs
index 3837e92..3bf4bd1 100644
--- a/src/stream.rs
+++ b/src/stream.rs
@@ -174,13 +174,13 @@ impl session::OutputStarter for OutputStarter {
         self: Box<Self>,
         _time: SystemTime,
         tty_size: TtySize,
-        theme: Option<TtyTheme>,
+        tty_theme: Option<TtyTheme>,
     ) -> io::Result<Box<dyn session::Output>> {
         let (stream_tx, stream_rx) = mpsc::unbounded_channel();
         let request_rx = self.request_rx;
 
         self.handle
-            .spawn(async move { run(tty_size, theme, stream_rx, request_rx).await });
+            .spawn(async move { run(tty_size, tty_theme, stream_rx, request_rx).await });
 
         Ok(Box::new(Output(stream_tx)))
     }