Improved the reporting of background color information.

third_party/WebKit/LayoutTests/accessibility/css-styles.html

Index: third_party/WebKit/LayoutTests/accessibility/css-styles.html
diff --git a/third_party/WebKit/LayoutTests/accessibility/css-styles.html b/third_party/WebKit/LayoutTests/accessibility/css-styles.html
index 2c73453c233d7e23d0a7175e54ab7efabf52acdb..2c66b05b9ccd4c54fef47b346d2de2461e215c49 100644
--- a/third_party/WebKit/LayoutTests/accessibility/css-styles.html
+++ b/third_party/WebKit/LayoutTests/accessibility/css-styles.html
@@ -16,7 +16,7 @@
                 font-size: 14px;
             }
             input {
-                background-color: white;
+                background-color: red;
                 color: blue;
                 font-size: 16px;
             }
@@ -34,25 +34,25 @@
 
             if (window.accessibilityController) {
                 var axHeading = accessibilityController.accessibleElementById("h1");
-                // Black has the value 0x000000.
-                shouldBeZero("axHeading.backgroundColor");
-                shouldBeEqualToNumber("axHeading.color", 0xff0000);
+                shouldBeEqualToNumber("axHeading.backgroundColor", 0xff000000);  // Black
+                shouldBeEqualToNumber("axHeading.color", 0xff0000);  // Red
                 shouldBeEqualToNumber("axHeading.fontSize", 12);
 
                 var axParagraph = accessibilityController.accessibleElementById("p");
-                shouldBeZero("axParagraph.backgroundColor");
+                shouldBeEqualToNumber("axParagraph.backgroundColor", 0xff000000);  // Black
+                // 0xff00 is called "lime" in CSS.
                 shouldBeEqualToNumber("axParagraph.color", 0xff00);
                 shouldBeEqualToNumber("axParagraph.fontSize", 14);
 
                 var axButton = accessibilityController.accessibleElementById("button");
                 // Button's background is not transparent, so alpha value is included.
-                shouldBeEqualToNumber("axButton.backgroundColor", 0xffffffff);
-                shouldBeEqualToNumber("axButton.color", 0xff);
+                shouldBeEqualToNumber("axButton.backgroundColor", 0xffff0000);  // Red
+                shouldBeEqualToNumber("axButton.color", 0xff);  // Blue
                 shouldBeEqualToNumber("axButton.fontSize", 16);
 
                 var axText = accessibilityController.accessibleElementById("text");
-                shouldBeEqualToNumber("axText.backgroundColor", 0xffffffff);
-                shouldBeEqualToNumber("axText.color", 0xff);
+                shouldBeEqualToNumber("axText.backgroundColor", 0xffff0000);  // Red
+                shouldBeEqualToNumber("axText.color", 0xff);  // Blue
                 shouldBeEqualToNumber("axText.fontSize", 16);
             }