diff -r 000000000000 -r 6474c204b198 browser/devtools/eyedropper/crosshairs.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/eyedropper/crosshairs.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,3 @@
+* {
+  cursor: crosshair !important;
+}
\ No newline at end of file