When we bought our boat, the PO had put dark insect screen material, fixed with press studs all over the saloon windows whether they opened or not. In fact, only one each side opened and actually needed to be screened. So when the material got tatty, I made new fitted screens, (which are much easier to remove for window cleaning as well), just for the windows that needed screens, and the rest are clear, but with curtains we can pull, but also largely now shaded by the new cockpit canopy we extended to both stern corners and right along the side decks sort of like the newer hard-top versions, when the small cockpit canopy was cactus. The most favourable comment from my wife and others was how nice to look out on normal-looking scenery, rather than the darkened view one gets through screens, or I guess tinting also. We found inside the boat a bit brighter, but not annoyingly so, and little different heatwise, and we are in subtropical waters. Certainly, nothing flicking a curtain over the sunny side window did not fix. Just a thought....
Might add weight to the suggestion of later addition of tinting only if proven necessary a good idea, as some others mentioned.