The Blue Dragons -
The Blue Dragonflight, ruled by Malygos, the lord of magic, was all but devastated by the evil Deathwing and his black Dragonflight. Though there are few great blue dragons left in the world,
their magical powers are awesome too behold. Native to Northrend, the few blues stay relatively close to the great Dragonblight, where they commune with the ancient dragon spirits who died in ages past. Their freezing breath and gargantaun claws have been the death of many hapless travelers in Northrend.
The Red Dragons -
The red Dragonflight, ruled by the Dragonqueen, Alexstrasza, is a noble and honorable group of creatures. They consider themselves the protectors of all life, and in many ways they are. More often than not, they are found protecting sacred areas and items, seeking to keep them from lesser beings who might be hurt by their energies. Their breath is a fearsome stream of fire, and they have been known to swallow enemies whole and slowly digest them over the course of a day. Their most hated enemies are the black dragons ruled by the great, dark leviathan, Deathwing
The Green Dragons -
The enchanted, ethereal green dragons live only to serve the forces of nature and uphold balance between mortal creatures and the ever-evolving world. The green Dragonflight, ruled by the dreaming godness, Ysera, holds a special love for the night elves and their druids. Though most green dragons live within the mystical dimension known as the Emerald Dream, a few of the graceful creatures still roam the shadowy paths of Ashenvale forest.
The Black Dragons -
Though the black Dragonflight was nearly annihilated in ages past, a few of the evil creatures have made their homes in the dry, desolate wastes of the Barrens.
With their lord, Deathwing, Either missing or dead, the black dragons seek too appease only themselves. The creatures are immensely powerful and cruel and revel in mortal sufffering.
The black dragons are the enemies of every other Dragonflight, especially the red dragons of Lordaeron.
I wasn't able to find anything about the Gold dragons although they are known too use lighting as weapons.
- by Aorn_Bladesinge
Article Source: www.warcry.com