we successfully used Sarlon roller blinds on the outside of windows...make sure the blind is held out from the window to maintain air flow We also created a screened outdoor room using black Sarlon cloth attached to frames enclosing a verandah (access through an old fashioned fly screen covered in Sarlon)...initially to keep out the sun but it also did a great job of keeping out bugs and keeping inside warmer in cold weather..the black Sarlon has the effect of looking through fly screens thus improving the view looking out and obscuring the view looking in during the day...i suggest you double check the use of double glazing in the tropics as you need to allow heat to escape overnight and a window covering would be better on the inside to keep heat in during short periods of cold weather

Sorry haven't had any personal experiences to share but here are articles on Houzz you can check out on this topic – [High-Performing Shutters That Both Protect and Decorate Your Home[(https://www.houzz.com.au/magazine/plantation-shutters-are-they-right-for-your-home-stsetivw-vs~89935440) [Hardworking Plantation Shutters Deliver the Goods[(https://www.houzz.com.au/magazine/hardworking-plantation-shutters-deliver-the-goods-stsetivw-vs~39453769) Good luck!

I think it’s a great idea to have the architrave/trim the plantation shutter colour. You’ll need to test Lexicon against the cream because they aren’t usually friends. Snowy Mountain 1/4 maybe a better match but try a sample.

It begs the Question ‘Why do you need the shutters, if not for privacy?’ Given ‘your look’ why not Sheers, panels of decorative screening (I.e. fretted panels that are side hinged) https://www.pinterest.com.au/pin/669629038358386262/. Can be layered cut