It just seems easy to pick on the little guy, which is Kia in this case. But that should be the point, this is a Kia we're talking about and it is indeed light years ahead of where it was not that long ago. In any case, it's easy to say that this copied from other cars, but in fact most if not all cars bear a resemblance to one another...this isn't a shocking revelation...think about it people, that's how design works for the most part! It's not like every manufacturer does something completely new for every new model. They simply tweak shapes and lines progressively, following the direction of their competitors in order to compete against them. Trend setters are few and far in between.
Design= Form follows function. The colors are obviously chosen to appeal to the eye. Cars would be ugly if looks didn't matter, so not sure what point you're making? Looks, beyond function, are what differentiate products in the same category. This is basic marketing and design, and there's no reason Dyson wouldn't consider these aspects. However, I stress that the form, in this case, is following the function!