minor #14884 [Console] Add bright colors to console. (CupOfTea696)

This PR was merged into the 5.3-dev branch.

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[Console] Add bright colors to console.

Doc updates for symfony/symfony#39976

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0770446 Add bright colors to console.

Author: javiereguiluz

console/coloring.rst

@@ -46,7 +46,9 @@ It is possible to define your own styles using the
     $output->writeln('<fire>foo</>');
 
 Any hex color is supported for foreground and background colors. Besides that, these named colors are supported:
-``black``, ``red``, ``green``, ``yellow``, ``blue``, ``magenta``, ``cyan`` and ``white``.
+``black``, ``red``, ``green``, ``yellow``, ``blue``, ``magenta``, ``cyan``, ``white``,
+``gray``, ``bright-red``, ``bright-green``, ``bright-yellow``, ``bright-blue``,
+``bright-magenta``, ``bright-cyan`` and ``bright-white``.
 
 .. versionadded:: 5.2