MAGETWO-89659: Address comments / feedback from review

 - fix bugs and stylings

Author: Robert He

app/code/Magento/Ui/Component/Form/Element/ColorPicker.php

@@ -8,7 +8,7 @@
 
 namespace Magento\Ui\Component\Form\Element;
 
-use Magento\Ui\Component\Form\Field;
+use Magento\Ui\Model\ColorPicker\ColorModesProvider;
 use Magento\Framework\View\Element\UiComponentFactory;
 use Magento\Framework\View\Element\UiComponentInterface;
 use Magento\Framework\View\Element\UiComponent\ContextInterface;
@@ -24,17 +24,25 @@ class ColorPicker extends AbstractElement
 
     const DEFAULT_MODE = 'full';
 
+    /**
+     * Provides color picker modes configuration
+     *
+     * @var ColorModesProvider
+     */
+    private $modeProvider;
+
     /**
      * Constructor
      *
      * @param ContextInterface $context
+     * @param ColorModesProvider $modesProvider
      * @param UiComponentFactory $uiComponentFactory
      * @param UiComponentInterface[] $components
      * @param array $data
      */
     public function __construct(
-        \Magento\Ui\Model\ColorPicker\ColorModesProvider $modesProvider,
         ContextInterface $context,
+        ColorModesProvider $modesProvider,
         array $components = [],
         array $data = []
     ) {
@@ -67,6 +75,5 @@ public function prepare()
         $this->_data['config']['colorPickerConfig'] = $colorPickerMode;
 
         parent::prepare();
-
     }
 }

app/code/Magento/Ui/Model/ColorPicker/ColorModesProvider.php

@@ -13,8 +13,18 @@
  */
 class ColorModesProvider
 {
+    /**
+     * Stores color picker modes configuration
+     *
+     * @var array
+     */
     private $colorModes;
 
+    /**
+     * Magento object manager
+     *
+     * @var \Magento\Framework\ObjectManagerInterface
+     */
     private $objectManager;
 
     public function __construct(