Color has nothing to do with the visibility of inclusions unless you get down into the very low color grades. Some D SI1 stones will be eyeclean and some will not. Depends on the type and location of inclusions. That is why you need magnified pictures of the stone as well as a gemologist examining the stone in person.
Ditto - the color has nothing to do with it. Diamonds can be lower color and still be crystal clear; it all depends on the location of the inclusions. I have a D SI1 (inclusion off to the side) and I have a hard time finding it even with a loupe!