Many soft tops now have an option for tinted rear windows. Bestop offers a 31% tint on the rear windows of many of their soft tops. Please note that with the tint option, door windows are NOT tinted.

YJ Supertop with Tinted Windows
Wrangler YJ Supertop with
Tinted Windows
YJ Replace-A-Top
Wrangler YJ Supertop with
Clear Windows