diff --git a/src/afterfact.rs b/src/afterfact.rs
index 5cf8fef1..80088a55 100644
--- a/src/afterfact.rs
+++ b/src/afterfact.rs
@@ -381,8 +381,8 @@ fn emit_csv<W: std::io::Write>(
 
     disp_wtr_buf.clear();
     write_color_buffer(
-        disp_wtr,
-        get_writable_color(Color::Green),
+        &disp_wtr,
+        get_writable_color(Some(Color::Green)),
         "Results Summary:",
     )
     .ok();
@@ -403,10 +403,21 @@ fn emit_csv<W: std::io::Write>(
     } else {
         (reducted_record_cnt as f64) / (all_record_cnt as f64) * 100.0
     };
-    println!("Total events: {}", all_record_cnt);
+    write_color_buffer(
+        &disp_wtr,
+        get_writable_color(None),
+        &format!("Total events: {}", all_record_cnt),
+    )
+    .ok();
+    write_color_buffer(
+        &disp_wtr,
+        get_writable_color(None),
+        &format!("Data reduction: {} events ({:.2}%)",
+        reducted_record_cnt, reducted_percent),
+    )
+    .ok();
     println!(
-        "Data reduction: {} events ({:.2}%)",
-        reducted_record_cnt, reducted_percent
+        
     );
     println!();
 
@@ -505,7 +516,7 @@ fn _print_unique_results(
 
     // output total results
     write_color_buffer(
-        BufferWriter::stdout(ColorChoice::Always),
+        &BufferWriter::stdout(ColorChoice::Always),
         None,
         &format!(
             "{} {}: {}",
@@ -525,7 +536,7 @@ fn _print_unique_results(
             head_word, level_name, tail_word, counts_by_level[i]
         );
         write_color_buffer(
-            BufferWriter::stdout(ColorChoice::Always),
+            &BufferWriter::stdout(ColorChoice::Always),
             _get_output_color(color_map, level_name),
             &output_raw_str,
         )
diff --git a/src/detections/print.rs b/src/detections/print.rs
index d74875d7..a63bd91e 100644
--- a/src/detections/print.rs
+++ b/src/detections/print.rs
@@ -324,7 +324,7 @@ impl AlertMessage {
     /// ERRORメッセージを表示する関数
     pub fn alert(contents: &str) -> io::Result<()> {
         write_color_buffer(
-            BufferWriter::stderr(ColorChoice::Always),
+            &BufferWriter::stderr(ColorChoice::Always),
             None,
             &format!("[ERROR] {}", contents),
         )
@@ -333,7 +333,7 @@ impl AlertMessage {
     /// WARNメッセージを表示する関数
     pub fn warn(contents: &str) -> io::Result<()> {
         write_color_buffer(
-            BufferWriter::stderr(ColorChoice::Always),
+            &BufferWriter::stderr(ColorChoice::Always),
             None,
             &format!("[WARN] {}", contents),
         )
diff --git a/src/detections/utils.rs b/src/detections/utils.rs
index 0ac7186c..b9f9ba4a 100644
--- a/src/detections/utils.rs
+++ b/src/detections/utils.rs
@@ -242,7 +242,7 @@ pub fn create_rec_info(data: Value, path: String, keys: &[String]) -> EvtxRecord
  * 標準出力のカラー出力設定を指定した値に変更し画面出力を行う関数
  */
 pub fn write_color_buffer(
-    wtr: BufferWriter,
+    wtr: &BufferWriter,
     color: Option<Color>,
     output_str: &str,
 ) -> io::Result<()> {
@@ -253,11 +253,11 @@ pub fn write_color_buffer(
 }
 
 /// no-colorのオプションの指定があるかを確認し、指定されている場合はNoneをかえし、指定されていない場合は引数で指定されたColorをSomeでラップして返す関数
-pub fn get_writable_color(color: Color) -> Option<Color> {
+pub fn get_writable_color(color: Option<Color>) -> Option<Color> {
     if configs::CONFIG.read().unwrap().args.no_color {
         None
     } else {
-        Some(color)
+        color
     }
 }
 
diff --git a/src/main.rs b/src/main.rs
index bf6a4797..7aeb3b2d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -117,7 +117,7 @@ impl App {
                 Ok(output) => {
                     if output != "You currently have the latest rules." {
                         write_color_buffer(
-                            BufferWriter::stdout(ColorChoice::Always),
+                            &BufferWriter::stdout(ColorChoice::Always),
                             None,
                             "Rules updated successfully.",
                         )
@@ -170,7 +170,7 @@ impl App {
 
         if *STATISTICS_FLAG {
             write_color_buffer(
-                BufferWriter::stdout(ColorChoice::Always),
+                &BufferWriter::stdout(ColorChoice::Always),
                 None,
                 "Generating Event ID Statistics",
             )
@@ -179,7 +179,7 @@ impl App {
         }
         if *LOGONSUMMARY_FLAG {
             write_color_buffer(
-                BufferWriter::stdout(ColorChoice::Always),
+                &BufferWriter::stdout(ColorChoice::Always),
                 None,
                 "Generating Logons Summary",
             )
@@ -262,7 +262,7 @@ impl App {
             return;
         } else {
             write_color_buffer(
-                BufferWriter::stdout(ColorChoice::Always),
+                &BufferWriter::stdout(ColorChoice::Always),
                 None,
                 &configs::CONFIG.read().unwrap().headless_help,
             )
@@ -274,7 +274,7 @@ impl App {
         let analysis_duration = analysis_end_time.signed_duration_since(analysis_start_time);
         println!();
         write_color_buffer(
-            BufferWriter::stdout(ColorChoice::Always),
+            &BufferWriter::stdout(ColorChoice::Always),
             None,
             &format!("Elapsed Time: {}", &analysis_duration.hhmmssxxx()),
         )
@@ -329,15 +329,15 @@ impl App {
                     )
                     .ok();
                 });
-                write_color_buffer(BufferWriter::stdout(ColorChoice::Always), None, &output).ok();
+                write_color_buffer(&BufferWriter::stdout(ColorChoice::Always), None, &output).ok();
             } else {
                 //標準出力の場合
                 let output = "The following pivot keywords were found:".to_string();
-                write_color_buffer(BufferWriter::stdout(ColorChoice::Always), None, &output).ok();
+                write_color_buffer(&BufferWriter::stdout(ColorChoice::Always), None, &output).ok();
 
                 pivot_key_unions.iter().for_each(|(key, pivot_keyword)| {
                     write_color_buffer(
-                        BufferWriter::stdout(ColorChoice::Always),
+                        &BufferWriter::stdout(ColorChoice::Always),
                         None,
                         &create_output(String::default(), key, pivot_keyword),
                     )
@@ -425,7 +425,7 @@ impl App {
     fn print_contributors(&self) {
         match fs::read_to_string("./contributors.txt") {
             Ok(contents) => {
-                write_color_buffer(BufferWriter::stdout(ColorChoice::Always), None, &contents).ok();
+                write_color_buffer(&BufferWriter::stdout(ColorChoice::Always), None, &contents).ok();
             }
             Err(err) => {
                 AlertMessage::alert(&format!("{}", err)).ok();
@@ -441,7 +441,7 @@ impl App {
             .min_level
             .to_uppercase();
         write_color_buffer(
-            BufferWriter::stdout(ColorChoice::Always),
+            &BufferWriter::stdout(ColorChoice::Always),
             None,
             &format!("Analyzing event files: {:?}", evtx_files.len()),
         )
@@ -667,7 +667,7 @@ impl App {
             Some(Color::Green)
         };
         write_color_buffer(
-            BufferWriter::stdout(ColorChoice::Always),
+            &BufferWriter::stdout(ColorChoice::Always),
             output_color,
             &content,
         )
@@ -686,7 +686,7 @@ impl App {
             None => {}
             Some(path) => {
                 let content = fs::read_to_string(path).unwrap_or_default();
-                write_color_buffer(BufferWriter::stdout(ColorChoice::Always), None, &content).ok();
+                write_color_buffer(&BufferWriter::stdout(ColorChoice::Always), None, &content).ok();
             }
         }
     }
@@ -700,7 +700,7 @@ impl App {
         let hayabusa_rule_repo = Repository::open(Path::new("rules"));
         if hayabusa_repo.is_err() && hayabusa_rule_repo.is_err() {
             write_color_buffer(
-                BufferWriter::stdout(ColorChoice::Always),
+                &BufferWriter::stdout(ColorChoice::Always),
                 None,
                 "Attempting to git clone the hayabusa-rules repository into the rules folder.",
             )
@@ -879,7 +879,7 @@ impl App {
                 .entry(tmp[3].to_string())
                 .or_insert(0b0) += 1;
             write_color_buffer(
-                BufferWriter::stdout(ColorChoice::Always),
+                &BufferWriter::stdout(ColorChoice::Always),
                 None,
                 &format!(
                     "[Updated] {} (Modified: {} | Path: {})",
@@ -896,7 +896,7 @@ impl App {
             Ok("Rule updated".to_string())
         } else {
             write_color_buffer(
-                BufferWriter::stdout(ColorChoice::Always),
+                &BufferWriter::stdout(ColorChoice::Always),
                 None,
                 "You currently have the latest rules.",
             )
diff --git a/src/options/level_tuning.rs b/src/options/level_tuning.rs
index f378ec1f..c7a7bf80 100644
--- a/src/options/level_tuning.rs
+++ b/src/options/level_tuning.rs
@@ -59,7 +59,7 @@ impl LevelTuning {
         for (path, rule) in rulefile_loader.files {
             if let Some(new_level) = tuning_map.get(rule["id"].as_str().unwrap()) {
                 write_color_buffer(
-                    BufferWriter::stdout(ColorChoice::Always),
+                    &BufferWriter::stdout(ColorChoice::Always),
                     None,
                     &format!("path: {}", path),
                 )
@@ -94,7 +94,7 @@ impl LevelTuning {
                 file.write_all(content.as_bytes()).unwrap();
                 file.flush().unwrap();
                 write_color_buffer(
-                    BufferWriter::stdout(ColorChoice::Always),
+                    &BufferWriter::stdout(ColorChoice::Always),
                     None,
                     &format!(
                         "level: {} -> {}",