It's their game balls. Also they are colourful even when covered in mud.
Easier to see on television
It didn't exactly change - both white and yellow balls are approved for use by ITF. The currently used colour (fluorescent yellow) was introduced in 1972 because it was better visible on TV sets.
[15 reds, 1 yellow, 1 green, 1 brown, 1 blue, 1 pink and 1 black.] Those are the colours used in Snooker which is played on an English Billiards table. English Billiards uses just three balls: a red, a plain white and a 'spot' white (or increasingly commonly these days, a yellow).
Before television was invented, tennis balls were white. They would have remained this way if television had not been broadcast on live TV This was because people couldn't see the white tennis balls flying across the screen. So, they were changed to neon green/yellow so that viewers could see them.
Yellow tennis balls replaced white tennis balls because the Lawn Tennis Association decided that the white balls were difficult to see. You can still buy white balls nowadays at whitetennisballs.com, which is the leading modern and easiest seller for white tennis balls for sale to reach in America and internationally. According to smithsonianmag.com, the first use of yellow tennis balls was in 1986 to make easier viewing on television. Wilson has always been making the white balls for lawn tennis which can be ordered online occasionally. But before the whitetennisballs.com company started selling in 2007, the white ball market was shut down for decades for most common use and is still quite rare. The only tennis balls that can be used in professional tennis is the neon and white, so it technically hasn't been changed within the rules of tennis.
== == 1. Yes, I remember clearly that the purple teletubbies name was Tinky-Winky. 2. Tinky-Winky is purple in merchandise, but he looks blue (or bluish) on TV. thanks guy these to ppl were arguying over the colour of tinky winky one thort it was blue and the other thort it was purple
The TV show called LA Hair has a girl with short purple hair, and a guy that is always wearing yellow clothing and shoes. There is an overweight African American girl that comes in often to see about getting her hair done.
Balls - TV channel - was created in 2008.
Alvin Purple - TV series - ended in 1976.
yes there is a proggrame on tv called golden balls
Fictional aliens on a tv show airing in the UK on BBC2 and in the US on PBS.
Haha, it is very EZ, complete this riddle yourself!