> David who was at the BBC at the time suggested they use yellow balls instead

Apparently he didn’t explicitly say they should be yellow, he just said the white didn’t work, the ITF chose yellow after research and studies.

Ironically, Wimbledon was the last venue to switch to the colour, despite David influencing the decision to change it.

> In 1972 the ITF introduced yellow tennis balls into the rules of tennis, as research had shown these balls to be more visible to television viewers. Meanwhile Wimbledon continued to use the traditional white ball, but eventually adopted yellow balls in 1986.

https://en.wikipedia.org/wiki/Tennis_ball#

https://pressurebox.com/blogs/news/why-are-tennis-balls-yell...