The police around here are not very tight on the tint. But we have to get our cars inspected every year (not sure if it's that way in Australia) and our tint has to pass inspection with 35%. There are very few shops that will pass illegal tint, being darker than 35%. You have to know the right people lol35 is good too. Our police are a bit more lenient here. The tint shop said most people here get 15 or 20. If you get it done through the dealer, you can only go legal at 35. And pay 3x more. Tint on your tail lights will look great too.
I got a few stickers from their online store a couple of years ago when I bought the G-Shock they collaborated on (I collect G-Shocks) but this one is from ebay. I have a black glitter one in another style on the other side which only appears if the sun is shining directly on it. Then it changes colours as you walk past.