Revert "Change default red to use the high intensity code"

This reverts commit 38ed099.
Non-standard SGR code should not be used, as it doesn't work depending
on environment.

src/Console/ConsoleOutput.php

@@ -95,7 +95,7 @@ class ConsoleOutput
      */
     protected static $_foregroundColors = [
         'black' => 30,
-        'red' => 91,
+        'red' => 31,
         'green' => 32,
         'yellow' => 33,
         'blue' => 34,

tests/TestCase/Console/ConsoleOutputTest.php

@@ -144,7 +144,7 @@ public function testStylesAdding()
     public function testFormattingSimple()
     {
         $this->output->expects($this->once())->method('_write')
-            ->with("\033[91mError:\033[0m Something bad");
+            ->with("\033[31mError:\033[0m Something bad");
 
         $this->output->write('<error>Error:</error> Something bad', false);
     }
@@ -203,7 +203,7 @@ public function testFormattingMissingStyleName()
     public function testFormattingMultipleStylesName()
     {
         $this->output->expects($this->once())->method('_write')
-            ->with("\033[91mBad\033[0m \033[33mWarning\033[0m Regular");
+            ->with("\033[31mBad\033[0m \033[33mWarning\033[0m Regular");
 
         $this->output->write('<error>Bad</error> <warning>Warning</warning> Regular', false);
     }
@@ -216,7 +216,7 @@ public function testFormattingMultipleStylesName()
     public function testFormattingMultipleSameTags()
     {
         $this->output->expects($this->once())->method('_write')
-            ->with("\033[91mBad\033[0m \033[91mWarning\033[0m Regular");
+            ->with("\033[31mBad\033[0m \033[31mWarning\033[0m Regular");
 
         $this->output->write('<error>Bad</error> <error>Warning</error> Regular', false);
     }