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Proper blending or contrasting can increase CTR. But only a publisher knows how to do it properly and tastefully on their specific site. Google doesn't. So, hopefully, Google won't control it, but publishers will. Logic tells me it would benefit all parties.
Still, a lot of people objected to the Comic Sans, and they did remove it. While I'm still not terribly happy about being a guinea pig, I'm glad to know that someone is listening.
"someone" is likely not listening but just checking the CTR of 10 million burgers being served and seeing that no-one dared click on the Comic Sans and so it was removed by the robot!
We should never shrug our shoulders when we consider ourselves guinea-pigs! Stand up and raise your paws fellow rodents! ;)