You are very lucky to have a wife who likes cars, many blokes are not quite so fortunate.
You are right on the money there Ed, I congratulate myself daily on the great decision I made when choosing her lol. I actually don't know anyone that has a partner that would tolerate my car spending/hobby.
it stays looking clean longest, it stays cooler in the sun & doesn't fade like some other colours.
Silver is my second choice.
Your right about the fading. We have 2 x White a Black and a Silver, the modern white paint just seems to cope with the elements (particularly sun) better than the other colours.