Use the rgb crate instead of own struct

Cargo.toml

@@ -17,6 +17,7 @@ no-color = []
 
 [dependencies]
 lazy_static = "1"
+rgb = "0.8"
 
 [target.'cfg(windows)'.dependencies.windows-sys]
 version = "0.48"

examples/custom_colors.rs

@@ -1,6 +1,6 @@
 use colored::*;
 fn main() {
-    let my_color = CustomColor::new(0, 120, 120);
+    let my_color = Rgb::new(0, 120, 120);
     println!("{}", "Greetings from Ukraine".custom_color(my_color));
     println!("{}", "Slava Ukraini!".on_custom_color(my_color));
     println!("{}", "Hello World!".on_custom_color((0, 120, 120)));

src/lib.rs

@@ -20,13 +20,23 @@
 //!    format!("{:30}", "format works as expected. This will be padded".blue());
 //!    format!("{:.3}", "and this will be green but truncated to 3 chars".green());
 //!
+//! Custom colours are implemented using the `rgb` crate, which is re-exported for
+//! convenience.
+//! 
+//! ```
+//! use colored::*;
+//! let my_color = Rgb::new(0, 120, 120);
+//! println!("{}", "This is using a custom colour".custom_color(my_color));
+//! ```
+//! see `examples/custom_colors.rs` for more info
 //!
 //! See [the `Colorize` trait](./trait.Colorize.html) for all the methods.
 //!
 //! Note: The methods of [`Colorize`], when used on [`str`]'s, return
 //! [`ColoredString`]'s. See [`ColoredString`] to learn more about them and
 //! what you can do with them beyond continue to use [`Colorize`] to further
 //! modify them.
+//! 
 #![warn(missing_docs)]
 
 #[macro_use]
@@ -40,10 +50,10 @@ pub mod control;
 mod error;
 mod style;
 
-pub use self::customcolors::CustomColor;
+pub use rgb::Rgb;
 
 /// Custom colors support.
-pub mod customcolors;
+pub use rgb;
 
 pub use color::*;
 
@@ -261,7 +271,7 @@ pub trait Colorize {
     fn custom_color<T>(self, color: T) -> ColoredString
     where
         Self: Sized,
-        T: Into<CustomColor>,
+        T: Into<Rgb<u8>>,
     {
         let color = color.into();
 
@@ -390,7 +400,7 @@ pub trait Colorize {
     fn on_custom_color<T>(self, color: T) -> ColoredString
     where
         Self: Sized,
-        T: Into<CustomColor>,
+        T: Into<Rgb<u8>>,
     {
         let color = color.into();