Just the same ugly taxi cab yellow clashing into the same nauseating gray over and over again until there's nobody left for it to offend?
I disagree with this assessment.
There is nothing ugly about taxi cab yellow. Nor is there anything nauseating about gray. Nor is there anything offensive about combining the two. Nor is there anything wrong with things being the same.
I for one deem the color scheme just fine as it is and find its consistency quite comforting.