My first colour choice was blue based on online pictures and advertising materials, but when I saw the colour in person (called Atomic Blue in Canada) I found the shade a bit too light for me. If they had brought the Deep Blue colour to our market, that would have been a contender. When I saw the Snow White Pearl in person, it was no contest - and I'm still happy I made that choice.
That's entirely based on personal visual preference, not anything to do with the paint durability, showing dirt, etc. As preference is 100 percent subjective, in the end it's only your personal take that counts. If you haven't purchased yet, I highly recommend you see each colour in person, and in different light (sunlight, overcast, and artificial).
Regardless what you choose (or have chosen), it's going to be a winner - don't let public opinion dictate what you really want!