Lands http://codereview.chromium.org/193032 for Charlie:...

skia/ext/skia_utils_gtk.cc

Index: skia/ext/skia_utils_gtk.cc
===================================================================
--- skia/ext/skia_utils_gtk.cc	(revision 26217)
+++ skia/ext/skia_utils_gtk.cc	(working copy)
@@ -10,8 +10,13 @@
 
 const int kSkiaToGDKMultiplier = 257;
 
+// GDK_COLOR_RGB multiplies by 257 (= 0x10001) to distribute the bits evenly
+// See: http://www.mindcontrol.org/~hplus/graphics/expand-bits.html
+// To get back, we can just right shift by eight
+// (or, formulated differently, i == (i*257)/256 for all i < 256).
+
 SkColor GdkColorToSkColor(GdkColor color) {
-  return SkColorSetRGB(color.red, color.green, color.blue);
+  return SkColorSetRGB(color.red >> 8, color.green >> 8, color.blue >> 8);
 }
 
 GdkColor SkColorToGdkColor(SkColor color) {