D'oy, I'm a Nebula Dragon foo' and nothing but!
But... if you insist to go by standardized colour vs persona assessment then I suppose my closest cousin may be:
The Sapphire Dragon
Characteristics:
* Very territorial - views all visitors as intruders
* Most militaristic of the gems and keeps vassals well trained and conditioned
* Rarely comes into conflict with the other clans
* Leaders
* Comes into conflict with Blacks for territory
* Not quick to attack
* Enemies: drow and dwarves, mind flayers, aboleth
* Treat their young well, but force them to leave early
* Treasure is usually kept in caverns only accessible by magic or psionics
Habitat:
* Subterranean lairs under 2 of the larger southern isles - extensive caverns that extend beneath the jungles
* Likes to eat giant spiders
Physiology:
* At birth, scales vary from light to dark blue. Beautiful
* Sometimes mistaken for Blues if observer doesn't remember climates
* Breath weapon: cone of high-pitched, almost inaudible, sound
* Immune to all forms of fear, web, hold, slow, and paralysis
Appearances in Literature and Folklore:
Advanced Dungeons and Dragons
Initial sourcing:
The Serene Dragon
~
With a mingling of Amethyst and Crystal betwixt the core. And so there you have it, I'm more of an amalgamation when one has only the chromatic, metallic and gem spectrums to draw from. Additional thoughts? Well, the Saphhire desc' is correct on most counts, not sure about the 'arachnivore' tendencies though...