Silver is most rewarding if you hate seeing dust all the time. And you will see it on any other color unless you keep car in your living room covered.
I had blue, white, you name it. They are all 'demanding' colors to keep it clean and 'like showroom' appearance. My current car is silver and I thank myself for selection as that color is almost maintenance free.
But, it is 'boring' color 'everybody' has. If Hyundai could offer 'mazda 3' or 'Vespa Dragon Red' that will be no brainer for me. Otherwise silver (80%) or that lighter blue (20%). Shame they do not offer nice, light colors like baby blue or similar. Unfortunately color choices are driven by what most (morons) buy. And morons have no brain nor taste.