diff --git a/components/gfx/display_list/mod.rs b/components/gfx/display_list/mod.rs
index 6e085ebb66c..9d2c3c46848 100644
--- a/components/gfx/display_list/mod.rs
+++ b/components/gfx/display_list/mod.rs
@@ -24,7 +24,7 @@ use text::glyph::CharIndex;
 use text::TextRun;
 
 use azure::azure::AzFloat;
-use azure::azure_hl::{Color};
+use azure::azure_hl::Color;
 
 use collections::linked_list::{self, LinkedList};
 use geom::{Point2D, Rect, SideOffsets2D, Size2D, Matrix2D};
@@ -798,7 +798,6 @@ pub struct SolidColorDisplayItem {
     pub base: BaseDisplayItem,
 
     /// The color.
-    #[ignore_heap_size]
     pub color: Color,
 }
 
@@ -813,11 +812,9 @@ pub struct TextDisplayItem {
     pub text_run: Arc<Box<TextRun>>,
 
     /// The range of text within the text run.
-    #[ignore_heap_size]
     pub range: Range<CharIndex>,
 
     /// The color of the text.
-    #[ignore_heap_size]
     pub text_color: Color,
 
     /// The position of the start of the baseline of this text.
@@ -897,11 +894,9 @@ pub struct BorderDisplayItem {
     pub border_widths: SideOffsets2D<Au>,
 
     /// Border colors.
-    #[ignore_heap_size]
     pub color: SideOffsets2D<Color>,
 
     /// Border styles.
-    #[ignore_heap_size]
     pub style: SideOffsets2D<border_style::T>,
 
     /// Border radii.
@@ -948,11 +943,9 @@ pub struct LineDisplayItem {
     pub base: BaseDisplayItem,
 
     /// The line segment color.
-    #[ignore_heap_size]
     pub color: Color,
 
     /// The line segment style.
-    #[ignore_heap_size]
     pub style: border_style::T
 }
 
@@ -969,7 +962,6 @@ pub struct BoxShadowDisplayItem {
     pub offset: Point2D<Au>,
 
     /// The color of this shadow.
-    #[ignore_heap_size]
     pub color: Color,
 
     /// The blur radius for this shadow.
diff --git a/components/gfx/text/glyph.rs b/components/gfx/text/glyph.rs
index 0edddf87459..bc900960be9 100644
--- a/components/gfx/text/glyph.rs
+++ b/components/gfx/text/glyph.rs
@@ -519,6 +519,7 @@ int_range_index! {
     #[derive(RustcEncodable)]
     #[doc = "An index that refers to a character in a text run. This could \
              point to the middle of a glyph."]
+    #[derive(HeapSizeOf)]
     struct CharIndex(isize)
 }
 
diff --git a/components/style/lib.rs b/components/style/lib.rs
index 9469d021196..7fa25ac8fad 100644
--- a/components/style/lib.rs
+++ b/components/style/lib.rs
@@ -9,8 +9,9 @@
 #![feature(collections)]
 #![feature(hash)]
 #![feature(rustc_private)]
-
+#![feature(custom_attribute, custom_derive)]
 #![plugin(string_cache_plugin)]
+#![plugin(plugins)]
 
 #[macro_use] extern crate log;
 #[macro_use] extern crate bitflags;
diff --git a/components/style/properties.mako.rs b/components/style/properties.mako.rs
index 01ee1f884e2..0e630183801 100644
--- a/components/style/properties.mako.rs
+++ b/components/style/properties.mako.rs
@@ -1027,8 +1027,8 @@ pub mod longhands {
         #[inline]
         pub fn get_initial_value() -> computed_value::T {
             computed_value::T(vec![
-                ("\u{201c}".to_string(), "\u{201d}".to_string()),
-                ("\u{2018}".to_string(), "\u{2019}".to_string()),
+                ("\u{201c}".to_owned(), "\u{201d}".to_owned()),
+                ("\u{2018}".to_owned(), "\u{2019}".to_owned()),
             ])
         }
 
diff --git a/components/style/values.rs b/components/style/values.rs
index 5c2c29f7aef..f1d9a9df9fa 100644
--- a/components/style/values.rs
+++ b/components/style/values.rs
@@ -43,7 +43,7 @@ macro_rules! define_numbered_css_keyword_enum {
     };
     ($name: ident: $( $css: expr => $variant: ident = $value: expr ),+) => {
         #[allow(non_camel_case_types)]
-        #[derive(Clone, Eq, PartialEq, PartialOrd, Ord, Copy, RustcEncodable, Debug)]
+        #[derive(Clone, Eq, PartialEq, PartialOrd, Ord, Copy, RustcEncodable, Debug, HeapSizeOf)]
         pub enum $name {
             $( $variant = $value ),+
         }
diff --git a/components/util/mem.rs b/components/util/mem.rs
index 6c9f04af984..3575627d46a 100644
--- a/components/util/mem.rs
+++ b/components/util/mem.rs
@@ -13,6 +13,7 @@ use geom::{Point2D, Rect, SideOffsets2D, Size2D, Matrix2D};
 
 use geometry::Au;
 use range::Range;
+use azure::azure_hl::Color;
 
 extern {
     // Get the size of a heap block.
@@ -196,5 +197,5 @@ known_heap_size!(0, bool, f32, f64);
 
 known_heap_size!(0, Rect<T>, Point2D<T>, Size2D<T>, Matrix2D<T>, SideOffsets2D<T>);
 
-known_heap_size!(0, Au);
-known_heap_size!(0, Range<T>);
\ No newline at end of file
+known_heap_size!(0, Au, Color);
+known_heap_size!(0, Range<T>);