Chuck, that garage is too dark for these aging eyes. My floor has a couple good cracks in it so there’s no use doing the floor. Also, with no windows and no ceiling, mine is pretty dark to begin with.

White is fine, you don't have to go bright white, all paint stores will tint it for free, just find one of the 250 different shades in the sample card section and pick one. A little off white won't be so industrial.

You can have the floor done but it can get pricey for a pro to do, if you do yourself it needs to be sanded down, acid etched so the material will adhere properly.