The sport with four color codes is squash. The color codes are for the balls. The different colors indicate which balls are to be used for specific weather conditions.
Croquet; each player (or team) takes two each.
no sport that has been invented yet
Squash or Racket Ball
the most visible ball in tennis is red yellow.
It varies... the background colour is usually a sandy yellow - with random 'blotches' of colour ranging from olive green to bright orange.
green peppers are unripe red ones, there are however many different coloured peppers ranging from pale green and yellow to orange red dark red purple and black
There are an infinite number of different shades of every colour
You can get blue, purple green and yellow.
Well it all depends on the colour that you are seeing because if it is a different colour EG. pink and yellow then you are most likely to see the yellow because it is brighter then the pink.
There are an infinite number of different shades of every colour
The different colours of Labradors are Black, Brown and Yellow. The yellow colour can be all shades starting from a sandy colour to a red.
Different varieties of peaches are different colours. They could be white or yellow or orange
Under certain lighting conditions, a yellow table tennis ball will provide for better visibility than a white ball.
If you mix yellow and red you will get orange different shade's. It depends what shades of red and yellow you use and the proportions used.
Yellow became the colour for school buses in 1939, so till then and for a while after 1939 it is conceivable that buses were a different colour than yellow.