diff --git a/layout/base/nsCSSRendering.cpp b/layout/base/nsCSSRendering.cpp
index 46a75e57e3d..140a975c5d2 100644
--- a/layout/base/nsCSSRendering.cpp
+++ b/layout/base/nsCSSRendering.cpp
@@ -755,13 +755,11 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
     loader->GetSize(imageSize);
     NS_RELEASE(loader);
 
+    PRBool needBackgroundColor = PR_FALSE;
 #if XXX
     // XXX enable this code as soon as nsIImage can support it
     if (image->NeedsBlend()) {
-      if (0 == (aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)) {
-        aRenderingContext.SetColor(aColor.mBackgroundColor);
-        aRenderingContext.FillRect(aBounds);
-      }
+      needBackgroundColor = PR_TRUE;
     }
 #endif
 
@@ -782,20 +780,27 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
     default:
       xCount = 0;
       yCount = 0;
+      needBackgroundColor = PR_TRUE;
       break;
     case NS_STYLE_BG_REPEAT_X:
       xCount = PRIntn(aDirtyRect.XMost() / tileWidth);
       yCount = 0;
+      needBackgroundColor = PR_TRUE;
       break;
     case NS_STYLE_BG_REPEAT_Y:
       xCount = 0;
       yCount = PRIntn(aDirtyRect.YMost() / tileHeight);
+      needBackgroundColor = PR_TRUE;
       break;
     case NS_STYLE_BG_REPEAT_XY:
       xCount = PRIntn(aDirtyRect.XMost() / tileWidth);
       yCount = PRIntn(aDirtyRect.YMost() / tileHeight);
       break;
     }
+    if (needBackgroundColor) {
+      aRenderingContext.SetColor(aColor.mBackgroundColor);
+      aRenderingContext.FillRect(aBounds);
+    }
 
     // When we have non-zero background position values, we have to
     // adjust how many tiles we draw (by at most one) and the starting
diff --git a/layout/html/style/src/nsCSSRendering.cpp b/layout/html/style/src/nsCSSRendering.cpp
index 46a75e57e3d..140a975c5d2 100644
--- a/layout/html/style/src/nsCSSRendering.cpp
+++ b/layout/html/style/src/nsCSSRendering.cpp
@@ -755,13 +755,11 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
     loader->GetSize(imageSize);
     NS_RELEASE(loader);
 
+    PRBool needBackgroundColor = PR_FALSE;
 #if XXX
     // XXX enable this code as soon as nsIImage can support it
     if (image->NeedsBlend()) {
-      if (0 == (aColor.mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)) {
-        aRenderingContext.SetColor(aColor.mBackgroundColor);
-        aRenderingContext.FillRect(aBounds);
-      }
+      needBackgroundColor = PR_TRUE;
     }
 #endif
 
@@ -782,20 +780,27 @@ nsCSSRendering::PaintBackground(nsIPresContext& aPresContext,
     default:
       xCount = 0;
       yCount = 0;
+      needBackgroundColor = PR_TRUE;
       break;
     case NS_STYLE_BG_REPEAT_X:
       xCount = PRIntn(aDirtyRect.XMost() / tileWidth);
       yCount = 0;
+      needBackgroundColor = PR_TRUE;
       break;
     case NS_STYLE_BG_REPEAT_Y:
       xCount = 0;
       yCount = PRIntn(aDirtyRect.YMost() / tileHeight);
+      needBackgroundColor = PR_TRUE;
       break;
     case NS_STYLE_BG_REPEAT_XY:
       xCount = PRIntn(aDirtyRect.XMost() / tileWidth);
       yCount = PRIntn(aDirtyRect.YMost() / tileHeight);
       break;
     }
+    if (needBackgroundColor) {
+      aRenderingContext.SetColor(aColor.mBackgroundColor);
+      aRenderingContext.FillRect(aBounds);
+    }
 
     // When we have non-zero background position values, we have to
     // adjust how many tiles we draw (by at most one) and the starting