@patricia_peak Good question. The turtle glass we got has a slight tint – in our case it’s a light bronze/gray hue. During the day, from inside the house, we honestly don’t notice a big difference in brightness. Our view is still very clear; it’s akin to having a mild sunglasses effect on the window. Colors outside look a tiny bit warmer in tone, but unless you had a clear glass right next to it to compare, you wouldn’t think anything of it.
From the outside (looking at the house), the windows do have a reflective tint, kind of like a mild mirror finish when the sun hits them. But a lot of modern windows have some degree of Low-E coating that looks similar, so it doesn’t stand out as unusual. At night, when lights are on inside, the tint significantly reduces the glow that escapes to the beach side – that’s the main purpose. We can have our interior lights on and from the sand you barely see the windows illuminated.
So, in short, it’s a subtle difference in everyday use. We didn’t mind at all, especially knowing it was for a good environmental reason. If you didn’t know they were “turtle” glass, you’d probably just think they are slightly tinted high-efficiency windows.