X11 named color methods not available through String refinement

Version

Ruby: 3.2.2 Rainbow gem: 3.1.1 or Rainbow commit: 629cde5

Description

Using the String refinement interface, ANSI foreground color methods can be used but their X11 counterparts cannot.

$ irb --simple-prompt -r rainbow/refinement
>> using Rainbow
=> main
>> Rainbow("hello").red
=> "\e[31mhello\e[0m"
>> "hello".red
=> "\e[31mhello\e[0m"
>> Rainbow("hello").tomato
=> "\e[38;5;209mhello\e[0m"
>> "hello".tomato
(irb):5:in `<main>': undefined method `tomato' for "hello":String (NoMethodError)

Workarounds

just use the Presenter interface

use another rainbow method earlier in the method chain, if appropriate, as they return a Presenter object

>> "hello".bright.tomato
=> "\e[1m\e[38;5;209mhello\e[0m"
>> "hello".tomato.bright
(irb):7:in `<main>': undefined method `tomato' for "hello":String (NoMethodError)

Diagnosis

The reason the ANSI methods work but the X11 ones don't is that the refinement works by defining Presenter's instance methods onto String. While the ANSI methods are explicitly defined on Presenter, the X11 ones are handled by Presenter's method_missing, so they don't get added. I'll make a PR.

ku1ik / rainbow