Reflective 'opaque' tinting is not legal in Utah, I know.  Or at least some years back, it was not.  My neighbor was passing through Utah in his bay window with tinted silver rear windows and was stopped by the Smokies..They then searched his van a found some roaches, not the many-legged types...Cost him a bundle, that reflective tint.
  I did the windows in my 84 myself with the darkest "off the shelf" tint I could find, and it works great.  Almost total privacy during daylight hours with no curtains, and much cooler inside.  At night, I put up curtains, using magnets, because the light inside allows people to see in.   With the tinted windows, your vision to the outside is not impaired (during daylight) and yet I can leave my bikes and wheels inside, change clothes in the city, etc without worry..
  Check your local laws about tinting in case you are in a 'dumbell cop' state..I know California has a real problem with tinted front door windows..they pull Arizona cars over all the time, because it's legal in Arizona...but not Wow-Fornia..
  Don Hanson