Added text_color option.

DependencyInjection/Configuration.php

@@ -43,6 +43,7 @@ class Configuration implements ConfigurationInterface
                 ->scalarNode('max_behind_lines')->defaultValue(null)->end()
                 ->scalarNode('interpolation')->defaultValue(true)->end()
                 ->arrayNode('background_color')->prototype('scalar')->end()
+                ->arrayNode('text_color')->prototype('scalar')->end()
             ->end()
         ;
 

Generator/CaptchaGenerator.php

@@ -98,6 +98,15 @@ class CaptchaGenerator
         $this->builder->setMaxFrontLines($options['max_front_lines']);
         $this->builder->setMaxBehindLines($options['max_behind_lines']);
 
+        if ($options['text_color'] != array()) {
+            if (count($options['text_color'])!=3) {
+                throw new \RuntimeException('text_color should be an array of r, g and b');
+            }
+
+            $color = $options['text_color'];
+            $this->builder->setTextColor($color[0], $color[1], $color[2]);
+        }
+
         if ($options['background_color'] != array()) {
             if (count($options['background_color'])!=3) {
                 throw new \RuntimeException('background_color should be an array of r, g and b');