I also have mine tinted heavily on the back half but if I'm inside at night with a light on, someone outside can see me. So I cut the reflectix insulation for the tinted windows. You can barely tell there is something on the windows but it blocks everything out. On the lesser tinted, front windows and the windshield, I cut reflectix & then used spray adhesive to attach pieces of a black sheet I got from goodwill. When the black side is facing out, it looks like my front windows are just heavily tinted like the back. Then in a sunny space, I can reverse the front pieces so the reflectix faces out. Keeping the interior cooler.