I noticed the same after changing templates.
The developer has for some time been saying that larger font sizes look better to him. I think he does not realize that his eyesight is getting shot like most middle-age people who spend hours on the computer, and is unconsciously designing with bigger size fonts ;o)
What some some designers do not get is that a good percentage of the population has a color vision deficiency (color blind). I think it is like 8 per cent of males worldwide.
The people who design search engine UI know this very well I think, reason why a good number of users have no idea what is an advert and what is a search result.