Certainly everyone one is entitled to their opinion and I respect your decision based on your taste.
I usually like to match metals ... belt buckle, watch case, ring ... etc, but the Rose/Yellow mismatch that occurs in some Patek references has never bothered me?
Indeed ... I would say it even looks appropriate to have the certain mechanics in Yellow and the bulk of the encasing in Rose? Recently I purchased a Rose Gold Skeleton and while the case, bracelet and plating of the movement are all Rose, the Calatrava over the mainspring and the balance wheel are fashioned in Yellow. A few parts ... like the spring itself ... remain in steel. To me it all looks appropriate?