More Harmony combobox/textfield updates:

ui/views/controls/textfield/textfield.cc

Index: ui/views/controls/textfield/textfield.cc
diff --git a/ui/views/controls/textfield/textfield.cc b/ui/views/controls/textfield/textfield.cc
index c75ba050ba3697388502baf0ac5658f156923c4e..14736697771bda755ab2e7e08f2ad70cc1fee919 100644
--- a/ui/views/controls/textfield/textfield.cc
+++ b/ui/views/controls/textfield/textfield.cc
@@ -357,7 +357,7 @@ SkColor Textfield::GetTextColor() const {
   if (!use_default_text_color_)
     return text_color_;
 
-  return GetNativeTheme()->GetSystemColor(read_only() ?
+  return GetNativeTheme()->GetSystemColor(read_only() || !enabled() ?
       ui::NativeTheme::kColorId_TextfieldReadOnlyColor :
       ui::NativeTheme::kColorId_TextfieldDefaultColor);
 }
@@ -377,7 +377,7 @@ SkColor Textfield::GetBackgroundColor() const {
   if (!use_default_background_color_)
     return background_color_;
 
-  return GetNativeTheme()->GetSystemColor(read_only() ?
+  return GetNativeTheme()->GetSystemColor(read_only() || !enabled() ?
       ui::NativeTheme::kColorId_TextfieldReadOnlyBackground :
       ui::NativeTheme::kColorId_TextfieldDefaultBackground);
 }