Tint spray is a bodge - I wouldn't consider Lamin-X to be a bodge. They are cut to size and give an even tint across the lights which is hard to achieve with tint spray. You're unlikely to get darker than R32 lights without going for some of nastier looking aftermarket lights. Worth bearing in mind also that after market lights rarely fit as well as OE ones, so surely tinting the originals is the best course of action? It's also a darn sight cheaper and easily reversable.
Just my 2 penneth.