diff --git a/src/batch.rs b/src/batch.rs
index 1112ead..498b450 100644
--- a/src/batch.rs
+++ b/src/batch.rs
@@ -1,3 +1,4 @@
+use ansi_term::{ANSIString, ANSIStrings};
 use meta::FileType;
 use meta::Meta;
 use std::cmp::Ordering;
@@ -19,7 +20,7 @@ impl Batch {
         let mut res = Vec::with_capacity(self.0.len());
 
         for meta in &self.0 {
-            res.push(meta.name.render());
+            res.push(meta.name.render().to_string());
         }
 
         res
@@ -33,22 +34,29 @@ impl Batch {
         let (max_size_value_length, max_size_unit_length) = self.detect_size_lenghts();
 
         for meta in &self.0 {
-            let mut link_str = String::new();
+            let mut link_str = ANSIString::from("");
             if let Some(ref symlink) = meta.symlink {
                 link_str = symlink.render();
             }
 
-            res.push(format!(
-                "{}{}  {}  {}  {}  {}{}",
+            let strings: &[ANSIString] = &[
                 meta.file_type.render(),
                 meta.permissions.render(),
-                meta.owner.render(max_user_length, max_group_length),
+                ANSIString::from("  "),
+                meta.owner.render_user(max_user_length),
+                ANSIString::from("  "),
+                meta.owner.render_group(max_group_length),
+                ANSIString::from("  "),
                 meta.size
                     .render(max_size_value_length, max_size_unit_length),
+                ANSIString::from("  "),
                 meta.date.render(),
+                ANSIString::from("  "),
                 meta.name.render(),
                 link_str,
-            ));
+            ];
+
+            res.push(ANSIStrings(strings).to_string());
         }
 
         res
@@ -58,7 +66,7 @@ impl Batch {
         let mut max: usize = 0;
 
         for meta in &self.0 {
-            let user = meta.owner.render_user();
+            let user = meta.owner.user();
             if user.len() > max {
                 max = user.len();
             }
@@ -71,7 +79,7 @@ impl Batch {
         let mut max: usize = 0;
 
         for meta in &self.0 {
-            let group = meta.owner.render_group();
+            let group = meta.owner.group();
             if group.len() > max {
                 max = group.len();
             }
diff --git a/src/display.rs b/src/display.rs
index b6b829f..07341b0 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -44,13 +44,13 @@ impl<'a> Display<'a> {
         );
     }
 
-    fn print_one_per_line(&self, outputs: &Vec<String>) {
+    fn print_one_per_line(&self, outputs: &[String]) {
         for output in outputs {
             println!("{}", output);
         }
     }
 
-    fn get_visible_width(&self, input: &String) -> usize {
+    fn get_visible_width(&self, input: &str) -> usize {
         let mut nb_invisible_char = 0;
 
         for (idx, _) in input.match_indices("[38;5;") {
diff --git a/src/meta/date.rs b/src/meta/date.rs
index 3af6320..31c6c1d 100644
--- a/src/meta/date.rs
+++ b/src/meta/date.rs
@@ -1,3 +1,4 @@
+use ansi_term::ANSIString;
 use color::{Colors, Elem};
 use std::fs::Metadata;
 use std::time::UNIX_EPOCH;
@@ -24,7 +25,7 @@ impl<'a> From<&'a Metadata> for Date {
 }
 
 impl Date {
-    pub fn render(&self) -> String {
+    pub fn render(&self) -> ANSIString {
         let now = time::now();
 
         let color;
@@ -36,6 +37,6 @@ impl Date {
             color = Colors[&Elem::Older];
         }
 
-        color.paint(self.0.ctime().to_string()).to_string()
+        color.paint(self.0.ctime().to_string())
     }
 }
diff --git a/src/meta/filetype.rs b/src/meta/filetype.rs
index 7d22a3b..2ec3bcf 100644
--- a/src/meta/filetype.rs
+++ b/src/meta/filetype.rs
@@ -1,3 +1,4 @@
+use ansi_term::ANSIString;
 use color::{Colors, Elem};
 use std::fs::Metadata;
 use std::os::unix::fs::FileTypeExt;
@@ -39,16 +40,16 @@ impl<'a> From<&'a Metadata> for FileType {
 }
 
 impl FileType {
-    pub fn render(self) -> String {
+    pub fn render(self) -> ANSIString<'static> {
         match self {
-            FileType::File => Colors[&Elem::File].paint(".").to_string(),
-            FileType::Directory => Colors[&Elem::Dir].paint("d").to_string(),
-            FileType::Pipe => Colors[&Elem::Pipe].paint("|").to_string(),
-            FileType::SymLink => Colors[&Elem::SymLink].paint("l").to_string(),
-            FileType::BlockDevice => Colors[&Elem::BlockDevice].paint("b").to_string(),
-            FileType::CharDevice => Colors[&Elem::CharDevice].paint("c").to_string(),
-            FileType::Socket => Colors[&Elem::Socket].paint("s").to_string(),
-            FileType::Special => Colors[&Elem::Special].paint("?").to_string(),
+            FileType::File => Colors[&Elem::File].paint("."),
+            FileType::Directory => Colors[&Elem::Dir].paint("d"),
+            FileType::Pipe => Colors[&Elem::Pipe].paint("|"),
+            FileType::SymLink => Colors[&Elem::SymLink].paint("l"),
+            FileType::BlockDevice => Colors[&Elem::BlockDevice].paint("b"),
+            FileType::CharDevice => Colors[&Elem::CharDevice].paint("c"),
+            FileType::Socket => Colors[&Elem::Socket].paint("s"),
+            FileType::Special => Colors[&Elem::Special].paint("?"),
         }
     }
 }
diff --git a/src/meta/name.rs b/src/meta/name.rs
index 83f048a..5914e9b 100644
--- a/src/meta/name.rs
+++ b/src/meta/name.rs
@@ -1,3 +1,4 @@
+use ansi_term::ANSIString;
 use color::{Colors, Elem};
 use icon;
 use meta::filetype::FileType;
@@ -40,7 +41,7 @@ impl Name {
         }
     }
 
-    pub fn render(&self) -> String {
+    pub fn render(&self) -> ANSIString {
         let mut content = String::with_capacity(self.name.len() + 3 /* spaces */);
 
         let color = if self.file_type == FileType::Directory {
@@ -53,7 +54,7 @@ impl Name {
         content += "  ";
         content += &self.name;
 
-        color.paint(content).to_string()
+        color.paint(content)
     }
 
     pub fn name(&self) -> String {
diff --git a/src/meta/owner.rs b/src/meta/owner.rs
index 8108d4f..9a5bc5c 100644
--- a/src/meta/owner.rs
+++ b/src/meta/owner.rs
@@ -1,3 +1,4 @@
+use ansi_term::ANSIString;
 use color::{Colors, Elem};
 use std::fs::Metadata;
 use std::os::unix::fs::MetadataExt;
@@ -30,31 +31,31 @@ impl<'a> From<&'a Metadata> for Owner {
 }
 
 impl Owner {
-    pub fn render(&self, user_alignment: usize, group_alignment: usize) -> String {
-        let mut content =
-            String::with_capacity(user_alignment + group_alignment + 2 /* spaces */);
-
-        content += &Colors[&Elem::User].paint(&self.user).to_string();
-        for _ in 0..(user_alignment - self.user.len()) {
-            content.push(' ');
-        }
-
-        // the space between the name and the group.
-        content.push(' ');
-
-        content += &Colors[&Elem::Group].paint(&self.group).to_string();
-        for _ in 0..(group_alignment - self.group.len()) {
-            content.push(' ');
-        }
-
-        content
-    }
-
-    pub fn render_user(&self) -> String {
+    pub fn user(&self) -> String {
         self.user.clone()
     }
 
-    pub fn render_group(&self) -> String {
+    pub fn group(&self) -> String {
         self.group.clone()
     }
+
+    pub fn render_user(&self, user_alignment: usize) -> ANSIString {
+        let mut alignment = String::with_capacity(user_alignment - self.user.len());
+
+        for _ in 0..(user_alignment - self.user.len()) {
+            alignment.push(' ');
+        }
+
+        Colors[&Elem::User].paint(alignment + &self.user)
+    }
+
+    pub fn render_group(&self, group_alignment: usize) -> ANSIString {
+        let mut alignment = String::with_capacity(group_alignment - self.group.len());
+
+        for _ in 0..(group_alignment - self.group.len()) {
+            alignment.push(' ');
+        }
+
+        Colors[&Elem::Group].paint(alignment + &self.group)
+    }
 }
diff --git a/src/meta/permissions.rs b/src/meta/permissions.rs
index 6682faa..d698476 100644
--- a/src/meta/permissions.rs
+++ b/src/meta/permissions.rs
@@ -1,4 +1,4 @@
-use ansi_term::{ANSIString, Colour};
+use ansi_term::{ANSIString, ANSIStrings, Colour};
 use color::{Colors, Elem};
 use std::fs::Metadata;
 use std::os::unix::fs::PermissionsExt;
@@ -48,28 +48,29 @@ impl<'a> From<&'a Metadata> for Permissions {
 }
 
 impl Permissions {
-    pub fn render(&self) -> String {
-        let mut res = String::with_capacity(11);
-
+    pub fn render(&self) -> ANSIString {
         let bit = |bit, chr: &'static str, color: Colour| {
             if bit {
-                color.paint(chr).to_string()
+                color.paint(chr)
             } else {
-                Colors[&Elem::NoAccess].paint("-").to_string()
+                Colors[&Elem::NoAccess].paint("-")
             }
         };
 
-        res += &bit(self.user_read, "r", Colors[&Elem::Read]);
-        res += &bit(self.user_write, "w", Colors[&Elem::Write]);
-        res += &self.execute_bit(self.setuid).to_string();
-        res += &bit(self.group_read, "r", Colors[&Elem::Read]);
-        res += &bit(self.group_write, "w", Colors[&Elem::Write]);
-        res += &self.execute_bit(self.setgid).to_string();
-        res += &bit(self.other_read, "r", Colors[&Elem::Read]);
-        res += &bit(self.other_write, "w", Colors[&Elem::Write]);
-        res += &self.other_execute_bit().to_string();
+        let strings: &[ANSIString<'static>] = &[
+            bit(self.user_read, "r", Colors[&Elem::Read]),
+            bit(self.user_write, "w", Colors[&Elem::Write]),
+            self.execute_bit(self.setuid),
+            bit(self.group_read, "r", Colors[&Elem::Read]),
+            bit(self.group_write, "w", Colors[&Elem::Write]),
+            self.execute_bit(self.setgid),
+            bit(self.other_read, "r", Colors[&Elem::Read]),
+            bit(self.other_write, "w", Colors[&Elem::Write]),
+            self.other_execute_bit(),
+        ];
 
-        res
+        let res = ANSIStrings(strings).to_string();
+        ANSIString::from(res)
     }
 
     fn execute_bit(&self, special: bool) -> ANSIString<'static> {
diff --git a/src/meta/size.rs b/src/meta/size.rs
index 423cae4..1d2bc9e 100644
--- a/src/meta/size.rs
+++ b/src/meta/size.rs
@@ -1,3 +1,4 @@
+use ansi_term::ANSIString;
 use color::{Colors, Elem};
 use std::fs::Metadata;
 
@@ -50,7 +51,7 @@ impl<'a> From<&'a Metadata> for Size {
 }
 
 impl Size {
-    pub fn render(&self, value_alignment: usize, unit_alignment: usize) -> String {
+    pub fn render(&self, value_alignment: usize, unit_alignment: usize) -> ANSIString {
         let mut content = String::with_capacity(value_alignment + unit_alignment + 1);
 
         let value = self.render_value();
@@ -71,13 +72,13 @@ impl Size {
         self.paint(content)
     }
 
-    fn paint(&self, content: String) -> String {
+    fn paint(&self, content: String) -> ANSIString {
         if self.unit == Unit::Byte || self.unit == Unit::Kilo {
-            Colors[&Elem::FileSmall].paint(content).to_string()
+            Colors[&Elem::FileSmall].paint(content)
         } else if self.unit == Unit::Mega {
-            Colors[&Elem::FileMedium].paint(content).to_string()
+            Colors[&Elem::FileMedium].paint(content)
         } else {
-            Colors[&Elem::FileLarge].paint(content).to_string()
+            Colors[&Elem::FileLarge].paint(content)
         }
     }
 
diff --git a/src/meta/symlink.rs b/src/meta/symlink.rs
index de91d0e..0f4b5b7 100644
--- a/src/meta/symlink.rs
+++ b/src/meta/symlink.rs
@@ -1,3 +1,4 @@
+use ansi_term::ANSIString;
 use color::{Colors, Elem};
 use std::path::PathBuf;
 
@@ -15,9 +16,7 @@ impl<'a> From<&'a PathBuf> for SymLink {
 }
 
 impl SymLink {
-    pub fn render(&self) -> String {
-        Colors[&Elem::SymLink]
-            .paint(String::from(" ⇒ ") + &self.0)
-            .to_string()
+    pub fn render(&self) -> ANSIString {
+        Colors[&Elem::SymLink].paint(String::from(" ⇒ ") + &self.0)
     }
 }