Spanglish doesn't mean 50/50 lol. And the "-ado" is absolutely pronounced the way they say it in Spanish, like dorado, tirado, girado, cerrado.
You're making up random rules and limiting pronunciations in order to make this shower thought true, and it just doesn't hold up to closer inspection.
I'd search just for prescription sunglasses and find a model that looks sporty, or regular glasses if you don't want the tint and find a lightweight frame design. If you're committed to something advertised as being designed for running or sports, look at brands like Oakley and either pick a pair with options for prescription lenses or bring it to an optometrist and have them replace the lenses with prescription ones. Or just go to a LensCrafters and check out their sport options. There are lots of glasses made for athletics.