text: why are australia's colors in the world cup green and yellow and not the colors on their flag?   well i have read all the responses so far and i must say that some are very amusing, but so far only one of these is close.  that is this one:  ( the real answer is at the bottom please read on.)  green and gold are the national colours of australia, as proclaimed by sir ninian stephen, the governor general of australia on 19 april 1984. the exact colours were specified as being pantone matching system numbers 116c and 348c. green and gold are also the traditional team colours of australian national sporting teams. nearly every current australian national sports teams wears "the green and gold", although the hues and proportions of the two colours may vary between teams and across eras. it is widely believed that the colours were chosen because they are the dominant colours of australia's floral emblem, the golden wattle.  you will find that every major australian national team wears green and gold including most notably the two time world champion wallabies of rugby, the socceroos of the world cup, and the olympic team.   source(s):  wikipedia.org  +++++   real answer: the official colours of australia are blue and gold... (not green and gold, green and yellow, or any other colours of the rainbow or anything else that the so called greenies or hippies or even other minority group may wish to conjure up.  if you go to parliment house and read the constitution ( not that many of obviously have or have the ability to) you will find amongst the small print that the national colours for the reprsentaion of this great land of ours called australia are blue and gold... the reason that we portray green and gold is for our sporting teams and that is due to the above mentioned clours of the wattle flower and tree.   now before you so called experts try to smack me down with all your references and alke i suggest you visit the national capitol and see the constitution for yourself. also take the time to read it (if your able to that is  and you will no doubt see that i am correct and you are misinformed..)   i hope that this had shed a bit of light on your dilemma or at least given more ammunition for a good arguement as i really do enjoy that..