Well, it wouldn't. Zagreb has quite a few yellow buildings, it's quite odd acctually. But, I guarantee you, tan wouldn't fit better. Because everyone calls them yellow, and the color is quite specific. And it was like dirty yellow before, because of the smog. Today it's under a renovation, and they are painting it in almost LEGO like yellow.
There are some more of yellow buildings in Zagreb, one even from the same architects. And this one is also made out of LEGOs by a friend of mine. http://www.mocpages.com/moc.php/37369
Anyway, thanks for the comment!