Why do some people perceive a tennis ball, which is yellow by the sport's rules and regulation, as being green? What makes some people think the ball has a greenish hue as
![Happy birthday Sir David Attenborough, (born OTD 1926) my favourite obscure fact about Attenborough is the one about how he's the reason we have yellow Tennis balls instead of white ones (like Happy birthday Sir David Attenborough, (born OTD 1926) my favourite obscure fact about Attenborough is the one about how he's the reason we have yellow Tennis balls instead of white ones (like](https://external-preview.redd.it/happy-birthday-sir-david-attenborough-born-otd-1926-my-v0-1KkBx8UmkhRs8i3T_nuMiuljAEeM4hNmD69KBwrAbLI.jpg?auto=webp&s=95b69179f2da541aba53c130b1d4e0beaccae47e)
Happy birthday Sir David Attenborough, (born OTD 1926) my favourite obscure fact about Attenborough is the one about how he's the reason we have yellow Tennis balls instead of white ones (like
![What color IS a tennis ball? Internet divided over yellow or green hue as debate sparks on social media - and even Roger Federer has weighed in | Daily Mail Online What color IS a tennis ball? Internet divided over yellow or green hue as debate sparks on social media - and even Roger Federer has weighed in | Daily Mail Online](https://i.dailymail.co.uk/1s/2023/08/09/22/74144061-12390761-image-a-15_1691616127966.jpg)
What color IS a tennis ball? Internet divided over yellow or green hue as debate sparks on social media - and even Roger Federer has weighed in | Daily Mail Online
![Wilson Tennis on X: "Like if you think Tennis Balls are green Retweet if you think Tennis Balls are yellow https://t.co/EBNvJ0s5r0" / X Wilson Tennis on X: "Like if you think Tennis Balls are green Retweet if you think Tennis Balls are yellow https://t.co/EBNvJ0s5r0" / X](https://pbs.twimg.com/media/EIeugOVXsAAw-iR.jpg:large)
Wilson Tennis on X: "Like if you think Tennis Balls are green Retweet if you think Tennis Balls are yellow https://t.co/EBNvJ0s5r0" / X
![So my girlfriend just told me that tennis balls are green not yellow and now my mind is blown. : r/ColorBlind So my girlfriend just told me that tennis balls are green not yellow and now my mind is blown. : r/ColorBlind](https://i.redd.it/l55jm7c8nsb41.jpg)