diff --git a/Cargo.lock b/Cargo.lock
index e74f4ae..c7281e7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,16 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "ONLang"
-version = "0.1.0"
-dependencies = [
- "clap",
- "json5",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -89,6 +79,17 @@ dependencies = [
  "os_str_bytes",
 ]
 
+[[package]]
+name = "colored"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3616f750b84d8f0de8a58bda93e08e2a81ad3f523089b05f1dffecab48c6cbd"
+dependencies = [
+ "atty",
+ "lazy_static",
+ "winapi",
+]
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.2"
@@ -176,6 +177,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
 [[package]]
 name = "libc"
 version = "0.2.126"
@@ -188,6 +195,17 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"
 
+[[package]]
+name = "onlang"
+version = "0.1.0"
+dependencies = [
+ "clap",
+ "colored",
+ "json5",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "os_str_bytes"
 version = "6.2.0"
diff --git a/Cargo.toml b/Cargo.toml
index 3bb7144..1912b3b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "ONLang"
+name = "onlang"
 version = "0.1.0"
 edition = "2021"
 
@@ -9,4 +9,5 @@ edition = "2021"
 serde = { version = "1.0", features = ["derive"] }
 json5 = "0.4.1"
 serde_json = "1.0"
-clap = { version = "3.2", features = ["derive"] }
\ No newline at end of file
+clap = { version = "3.2", features = ["derive"] }
+colored = "2"
\ No newline at end of file
diff --git a/src/interpreter.rs b/src/interpreter.rs
index 5ff6b76..8b56e1d 100644
--- a/src/interpreter.rs
+++ b/src/interpreter.rs
@@ -1,6 +1,7 @@
+use colored::*;
+use json5;
 use serde_json::Value;
 use std::collections::HashMap;
-
 pub struct Interpreter {
     input: String,
     vars: HashMap<String, Value>,
@@ -12,7 +13,7 @@ impl Interpreter {
         Interpreter {
             input,
             vars: HashMap::new(),
-            pos: 0,
+            pos: 1,
         }
     }
 
@@ -21,37 +22,117 @@ impl Interpreter {
         let arr = obj.as_array_mut().unwrap();
 
         for command in arr {
-            for (name, value) in command.as_object().unwrap() {
-                if name == "print" {
-                    self.print(value);
+            match command {
+                Value::Object(command) => {
+                    for (name, value) in command {
+                        match name.as_str() {
+                            "print" => match value {
+                                Value::Array(value) => {
+                                    self.print(value, false);
+                                }
+                                Value::String(value) => {
+                                    self.print(&mut vec![Value::String(value.to_string())], false);
+                                }
+                                _ => {
+                                    self.error("Unsupported data type for the print argument");
+                                }
+                            },
+                            "println" => match value {
+                                Value::Array(value) => {
+                                    self.print(value, true);
+                                }
+                                Value::String(value) => {
+                                    self.print(&mut vec![Value::String(value.to_string())], true);
+                                }
+                                _ => {
+                                    self.error("Unsupported data type for the println argument");
+                                }
+                            },
+                            name => {
+                                self.unk_token(&name);
+                            }
+                        }
+                    }
+                }
+                Value::String(name) => match name.as_str() {
+                    "Exit" => {
+                        self.exit();
+                    }
+                    "ErrExit" => {
+                        self.err_exit();
+                    }
+                    value => {
+                        self.print(&mut vec![Value::String(value.to_string())], false);
+                    }
+                },
+                Value::Array(command) => {
+                    self.print(command, false);
+                }
+                _ => {
+                    self.error("Unsupported data type for the command");
                 }
             }
+
+            self.pos += 1;
         }
     }
-
-    fn print(&self, args: &Value) {
-        for arg in args.as_array().unwrap() {
+    fn print(&self, args: &mut Vec<Value>, ln: bool) {
+        for arg in args {
             match arg {
-                Value::Array(arg) => {
-                    print!("{:#?}", arg);
+                Value::Array(args) => {
+                    print!("{}", serde_json::to_string_pretty(args).unwrap());
                 }
                 Value::String(arg) => {
                     print!("{}", arg);
                 }
                 Value::Bool(arg) => {
-                    print!("{}", arg);
+                    print!("{}", arg.to_string().blue());
                 }
                 Value::Number(arg) => {
-                    print!("{}", arg);
+                    print!("{}", arg.to_string().truecolor(180, 208, 143));
                 }
                 Value::Object(arg) => {
-                    print!("{:#?}", arg);
+                    print!("{}", serde_json::to_string_pretty(arg).unwrap());
                 }
                 Value::Null => {
-                    print!("null");
+                    print!("{}", "null".blue());
                 }
             }
+            if ln == true {
+                println!();
+            }
         }
-        println!("");
+        if ln == false {
+            println!();
+        }
+    }
+    fn exit(&self) {
+        println!("{}", "Programm finished with exit code: 0".green());
+        std::process::exit(0);
+    }
+    fn err_exit(&self) {
+        println!("{}", "Programm finished with exit code: 1".red());
+        std::process::exit(1);
+    }
+    fn unk_token(&self, name: &str) {
+        println!(
+            "{} {} | {} {}",
+            "Unexpected token name:".red(),
+            name.bold().black(),
+            "pos:".green(),
+            self.pos
+        );
+        std::process::exit(1);
+    }
+
+    fn error(&self, name: &str) {
+        println!(
+            "{} {} | {} {}",
+            "Error:".red(),
+            name.bold().black(),
+            "pos:".green(),
+            self.pos
+        );
+        std::process::exit(1);
     }
 }
diff --git a/src/main.rs b/src/main.rs
index ecf432b..5e7700b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,4 @@
 use clap::Parser;
-use json5;
-use serde_json::Value;
 use std::fs;
 use std::time::Instant;
 
diff --git a/test.json5 b/test.json5
index f80b445..636668e 100644
--- a/test.json5
+++ b/test.json5
@@ -1,8 +1,21 @@
 [
+  //print functions
   {
-    print: ["Hello world", "! ", 1, null],
+    print: ["Hello world", "! ", 1, "\n", ["wow"]],
   },
   {
-    print: ["Khm", "?"],
+    println: ["Hello", "world", "!"],
   },
+  {
+    print: "Fool",
+  },
+  "Really?",
+
+  [2, "Yes \n", true],
+
+  true, //throw error
+
+  //Exit functions
+  "Exit",
+  "ErrExit",
 ]