There is this site, bondsuits.com, which talks about how James Bond has dressed/been dressed in all his films and how Bond is the epitome of men's fashion. Out of curiosity, I asked them what they thought of the way Lupin dresses (black shirt, yellow tie, green/red/pink/blue jacket). They sent me this reply in all seriousness:
"Arsene Lupin III's clothing works on an animated character, but it would not work so well on a real person. Dark shirts with tailored clothing, especially with a tie, don't work."
So, that was interesting.
Of course, Lupin doesn't really follow fashion trends/standards, but sets his own. While I think the pink jacket may have been too gaudy, his other jacket colors (and his dark shirts) have made him very distinct and awesome.