## ascii-art-color
### Objectives
You must follow the same [instructions ](../README.md ) as in the first subject but this time with colors.
The output should manipulate colors using the **flag** `--color=<color>` , in which `--color` is the flag and `<color>` is the color desired by the user. These colors can be achieved using different notations (color code systems, like `RGB` , `hsl` , `ANSI` ...), it is up to you to choose which one you want to use.
- You should be able to choose between coloring a single letter or a set of letters (use your imagination for this one).
- If the letter is not specified, the whole `string` should be colored.
- The flag must have exactly the same format as above, any other formats must return the following usage message:
```console
Usage: go run . [STRING] [OPTION]
EX: go run . something --color=< color >
```
### Instructions
- Your project must be written in **Go** .
- The code must respect the [**good practices** ](../../good-practices/README.md ).
- It is recommended to have **test files** for [unit testing ](https://go.dev/doc/tutorial/add-a-test ).
### Allowed packages
- Only the [standard Go ](https://golang.org/pkg/ ) packages are allowed
This project will help you learn about :
- The Go file system(**fs**) API
- Color converters
- Data manipulation
- Terminal display
