Niiice!
He should wear blue more often; it's one of his best colours. Even baby blue works (though I can understand his desire not to indulge in that shade). Grey blues look fabulous with his colouring and deep blues that don't run to red. I think I read once that he said blue was his favourite colour, but he rarely wears it outside of those ubiquitous dark, dark blue pin-striped suits.
Tans, duns, and camels are iffish colours for him. When he picks one that is warmer (more red) they work, but most of them are cooler and they wash him out. And he wears them constantly *sigh*. Pure white and pure black are harsh on him, but he obviously likes them - and grey is awful when it's too cool . . . and he clearly doesn't carry a colour wheel to check the shade.
natter natter natter . . . I, of course, volunteer to be his stylist !