Besides rounded corners and slight differences in color shades and don't color, they are pretty close. It just seems unusual to me. Maybe there is a superior palette of colors for mobile computer and we are merging toward it.
Well there is certainly a trend where simple colours and minimal lines are used. Thin sans-serif text has always been considered modern (just look at Apple's site). I don't know if this is a fad or what, but it seems there are less acceptable styles to choose from as everything that doesn't fit this style is considered old and boring.