This colors are colors of the Efiopian flag (In anticipation of the coming of Jah, who would free them, and would lead to the "paradise on earth" - Ethiopia.) Meaning of colors: green stands for fertility, labor and development, yellow - the hope, justice and equality, red - the sacrifice and heroism in the name of freedom and equality.

As far as I know, the Rastafari coluors are green, yellow and red. What do they symbolise?

Yaroslav, quite right!

By the way, mind your spelling! reggAE

From http://en.wikipedia.org/wiki/Rastafari_movement

Reggie is linked with rastafarians.The Rastafari movement, or Rasta, is a new religious movement. It arose in the 1930s in Jamaica, a country with a predominantly Christian culture where 98% of the people were the black descendants of slaves. Most of its adherents worship Haile Selassie I, Emperor of Ethiopia (ruled 1930–1974), as God incarnate, the Second Advent, or the reincarnation of Jesus. Members of the Rastafari movement are known as Rastas, or Rastafari. The movement is sometimes referred to as "Rastafarianism", but this term is considered derogatory and offensive by some Rastas, who, being highly critical of "isms" (which they see as a typical part of "Babylon culture"), dislike being labelled as an "ism" themselves.
The name Rastafari is taken from Ras Tafari, the pre-regnal title of Haile Selassie I, composed of Amharic Ras (literally "Head", an Ethiopian title equivalent to Duke), and Haile Selassie's pre-regnal given name, Tafari. Rastafari are generally distinguished for asserting the doctrine that Haile Selassie I, the former and final Emperor of Ethiopia, is another incarnation of the Christian God, called Jah.Most see Haile Selassie I as Jah or Jah Rastafari, who is the second coming of Jesus Christ onto the Earth, but to others he is simply God's chosen king on earth.
The Rastafari movement encompasses themes such as the spiritual use of cannabis and the rejection of western society, called Babylon (from the metaphorical Babylon of the Christian New Testament). It proclaims Africa (also "Zion") as the original birthplace of mankind, and from the beginning of the movement the call to repatriation to Africa has been a central theme.Rasta also embraces various Afrocentric and Pan-African social and political aspirations,such as the sociopolitical views and teachings of Jamaican publicist, organizer, and black nationalist Marcus Garvey (also often regarded as a prophet). Another theme is Royalty, with Rastas seeing themselves as African royalty and using honorifics such as Prince or King in order to give royalty to their names.
Rastafari is not a highly organized religion; it is a movement and an ideology. Many Rastas say that it is not a "religion" at all, but a "Way of Life".Many Rastas do not claim any sect or denomination, and thus encourage one another to find faith and inspiration within themselves, although some do identify strongly with one of the "mansions of Rastafari" — the three most prominent of these being the Nyahbinghi, the Bobo Ashanti and the Twelve Tribes of Israel.
Today, awareness of the Rastafari movement has spread throughout much of the world, largely through interest generated by reggae music, especially the major international success of Jamaican singer/songwriter Bob Marley (1945–1981).

Bob Marley in France noted as a Rasta.
By 1997, there were around one million Rastafari faithful worldwide.[10] In the 2001 Jamaican census, 24,020 individuals (less than 1 percent of the population) identified themselves as Rastafarians.Other sources have estimated that in the 2000s they formed "about 5 percent of the population" of Jamaica, or have conjectured that "there are perhaps as many as 100,000 Rastafarians in Jamaica".