Switch control's HDR argument to enum

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Input/Basic/HDRColorNode.cs

             RemoveSlotsNameNotMatching(new[] { OutputSlotId });
         }
 
-        [ColorControl("", true)]
+        [ColorControl("", ColorMode.HDR)]
         public Color color
         {
             get { return m_Color; }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Controls/ColorControl.cs

 
 namespace UnityEditor.ShaderGraph.Drawing.Controls
 {
+    public enum ColorMode
+    {
+        Default,
+        HDR
+    }
+
-        bool m_Hdr;
+        ColorMode m_ColorMode;
-        public ColorControlAttribute(string label = null, bool hdr = false)
+        public ColorControlAttribute(string label = null, ColorMode colorMode = ColorMode.Default)
-            m_Hdr = hdr;
+            m_ColorMode = colorMode;
-            return new ColorControlView(m_Label, m_Hdr, node, propertyInfo);
+            return new ColorControlView(m_Label, m_ColorMode, node, propertyInfo);
         }
     }
 
         PropertyInfo m_PropertyInfo;
 
-        public ColorControlView(string label, bool hdr, AbstractMaterialNode node, PropertyInfo propertyInfo)
+        public ColorControlView(string label, ColorMode colorMode, AbstractMaterialNode node, PropertyInfo propertyInfo)
         {
             m_Node = node;
             m_PropertyInfo = propertyInfo;
                 Add(new Label(label));
 
             ColorField colorField;
-            if(hdr)
-                colorField = new ColorField { value = (Color)m_PropertyInfo.GetValue(m_Node, null), hdr = true };
-            else
-                colorField = new ColorField { value = (Color)m_PropertyInfo.GetValue(m_Node, null) };
+            switch(colorMode)
+            {
+                case ColorMode.HDR:
+                    colorField = new ColorField { value = (Color)m_PropertyInfo.GetValue(m_Node, null), hdr = true };
+                    break;
+                default:
+                    colorField = new ColorField { value = (Color)m_PropertyInfo.GetValue(m_Node, null) };
+                    break;
+            }
             colorField.OnValueChanged(OnChange);
             Add(colorField);
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Controls/DefaultControl.cs

         public VisualElement InstantiateControl(AbstractMaterialNode node, PropertyInfo propertyInfo)
         {
             if (propertyInfo.PropertyType == typeof(Color))
-                return new ColorControlView(null, false, node, propertyInfo);
+                return new ColorControlView(null, ColorMode.Default, node, propertyInfo);
             if (typeof(Enum).IsAssignableFrom(propertyInfo.PropertyType))
                 return new EnumControlView(null, node, propertyInfo);
             if (propertyInfo.PropertyType == typeof(Texture2D))