Give 'em a subtype based on color, or just leave it off (like the faerie dragon in Draconomicon)?
Skills: Bluff, Hide, and Move Silently are considered class skills for faerie drakes?
These drakes are very fond of swimming, diving, and fishing; one can stay submerged and active for up to three turns, or twice that if inactive. While submerged, they move through the water with great speed and maneuverability.
Challenge Ratings: Wyrmling x; very young x; young x; juvenile x; young adult x; adult x; mature adult x; old x; very old x; ancient x; wyrm x; great wyrm x
Environment: Any?
clutch?
I like the alignment.
The wyrmlings probably start at CR 1, but I have trouble seeing the great wyrms getting to CR 12. Maybe something like 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7? How's that look?
The wyrmling breath weapon needs to be 1d6, not 1d12. Copy-paste demon strikes again!
That static CR progression actually has precedent. In the Greyhawk dragon's stats in Dragon magazine it had two successive age categories with the same CR; but in Dragons of Faerûn and the original WotC web article where it is called the steel dragon, it doesn't have that.