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
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![Yellow tennis balls which look better on colour TV were the idea of David Attenborough when he was controller of BBC2. | Tennis ball, Tennis balls, Tennis Yellow tennis balls which look better on colour TV were the idea of David Attenborough when he was controller of BBC2. | Tennis ball, Tennis balls, Tennis](https://i.pinimg.com/736x/eb/72/7f/eb727f67e5c3d2bc2d10a15fc0bfdb35.jpg)
Yellow tennis balls which look better on colour TV were the idea of David Attenborough when he was controller of BBC2. | Tennis ball, Tennis balls, Tennis
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Mail Shop - Yellow tennis balls, which look better on colour TV were the idea of David Attenborough when he was the controller of BBC2! But what colour did they used to
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