Fix config tree issues

src/DependencyInjection/Configuration.php

@@ -13,18 +13,6 @@ class Configuration implements ConfigurationInterface
     public function getConfigTreeBuilder(): TreeBuilder
     {
         $treeBuilder = new TreeBuilder('pcm_icon');
-
-        $treeBuilder->getRootNode()
-            ->children()
-                ->arrayNode('directories')
-                    ->scalarPrototype()->end()
-                ->end()
-                ->arrayNode('colours') // Akshewally it is defined
-                    ->variablePrototype()->end()
-                ->end()
-            ->end()
-        ;
-
         $this->addValidationRules($treeBuilder->getRootNode());
 
         return $treeBuilder;
@@ -46,23 +34,25 @@ class Configuration implements ConfigurationInterface
                         ->end()
                     ->end()
                 ->end()
+                ->arrayNode('colours')
+                    ->validate()
+                        ->ifEmpty()
+                        ->thenInvalid('Colours cannot be empty!')
+                    ->end()
+
+                    ->arrayPrototype()
+                        ->normalizeKeys(false)
+                        ->children()
+                            ->scalarNode('fill')->isRequired()->end()
+                            ->scalarNode('stroke')->isRequired()->end()
+                            ->scalarNode('fill-hover')->isRequired()->end()
+                            ->scalarNode('stroke-hover')->isRequired()->end()
+                            ->scalarNode('fill-group-hover')->isRequired()->end()
+                            ->scalarNode('stroke-group-hover')->isRequired()->end()
+                        ->end()
+                    ->end()
+                ->end()
             ->end()
         ;
-        // $rootNode
-        //     ->children()
-        //         ->arrayNode('directories')
-        //             ->scalarPrototype()
-        //                 ->validate()
-        //                     ->ifTrue(function ($value) {
-        //                         // Add validation logic for directories here
-        //                         return false;
-        //                     })
-
-        //                     ->thenInvalid('Invalid directory')
-        //                 ->end()
-        //             ->end()
-        //         ->end()
-        //     ->end()
-        // ;
     }
 }