After seeing this wrong color dozens of times while testing svg
icons on high zooms, I can't stand the slightly different color of
the border for the caret from the rest of the ULS dialog. The border
of ULS is transparent with 0.2 alpha component over the background,
in this case I just hardcoded the resulting color here to match.
Change-Id: Ib2b2801f51ea02d2788d8703e3410eca9b3a57a3
ff6c3041c2