Remove eyedropper from Color fields

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

             if (!string.IsNullOrEmpty(label))
                 Add(new Label(label));
 
-            var colorField = new ColorField { value = (Color)m_PropertyInfo.GetValue(m_Node, null) };
+            var colorField = new ColorField { value = (Color)m_PropertyInfo.GetValue(m_Node, null), 
+                showEyeDropper = false };
             colorField.OnValueChanged(OnChange);
             Add(colorField);
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Views/Slots/ColorRGBSlotControlView.cs

         public ColorRGBSlotControlView(ColorRGBMaterialSlot slot)
         {
             m_Slot = slot;
-            var colorField = new ColorField { value = new Color(slot.value.x, slot.value.y, slot.value.z, 0), showAlpha = false };
+            var colorField = new ColorField { value = new Color(slot.value.x, slot.value.y, slot.value.z, 0),
+                showEyeDropper = false, showAlpha = false };
             colorField.OnValueChanged(OnValueChanged);
             Add(colorField);
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/Views/Slots/ColorSlotControlView.cs

         public ColorRGBASlotControlView(ColorRGBAMaterialSlot slot)
         {
             m_Slot = slot;
-            var colorField = new ColorField { value = slot.value };
+            var colorField = new ColorField { value = slot.value, showEyeDropper = false };
             colorField.OnValueChanged(OnValueChanged);
             Add(colorField);
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Resources/Styles/MaterialGraph.uss

 }
 
 ColorRGBASlotControlView > ColorField {
-    width: 50;
+    width: 30;
+    margin-left: 0;
+    margin-right: 0;
 }
 
 ColorRGBSlotControlView {
 
 ColorRGBSlotControlView > ColorField {
-    width: 50;
+    width: 41;
+    margin-left: 0;
+    margin-right: 0;
 }
 
 .edge.fromMatrix4, .edge.fromMatrix3, .edge.fromMatrix2 {