diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..d32ef21
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+  "cSpell.words": [
+    "println"
+  ]
+}
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
index d99ae47..7f318d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,13 +1,18 @@
 [package]
 name = "picocolors"
 description = "rust version of picocolors"
-keywords = ["cli", "colors"]
+keywords = [
+  "cli",
+  "colors",
+]
 version = "0.1.0"
-license = "MIT"
 edition = "2021"
 readme = "README.md"
 repository = "https://github.com/SoonIter/picocolors_rs"
-authors = ["SoonIter"]
+authors = [
+  "SoonIter",
+]
+license-file = "LICENSE"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
diff --git a/LICENSE b/LICENSE
index e4e4945..aadb717 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2023 SoonIter
+Copyright (c) 2023-now SoonIter
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index eff471b..1ce5402 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,15 @@
 # picocolors
 
-rust version of picocolors
+rust port of [picocolors](https://github.com/alexeyraspopov/picocolors)
 
 [![crates-io](https://badgen.net/crates/v/picocolors_rs)](https://crates.io/crates/picocolors)
 
 ```rust
-use picocolors::{bg_black, bold};
-
+use picocolors::{bg_black, bold, formatter};
 fn main() {
   println!("hello {}", bold(bg_black("world")));
+
+  let custom_blue = formatter("\x1b[34m", "\x1b[39m");
+  println!("hello {}", custom_blue("world"));
 }
 ```
diff --git a/src/main.rs b/src/main.rs
index e5f9981..21586be 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,6 @@ use picocolors::{bg_black, bold, formatter};
 fn main() {
   println!("hello {}", bold(bg_black("world")));
 
-  let my_custom_blue = formatter("\x1b[0m", "\x1b[0m");
-  println!("hello {:?}", my_custom_blue("world"));
+  let my_custom_blue = formatter("\x1b[34m", "\x1b[39m");
+  println!("hello {}", my_custom_blue("world"));
 }