The dark-eyed clear is actually a combination of recessive pied and clearflight pied. When these two mutations are both present, the budgie is has no markings or color. It is either pure yellow (if it is a yellow-based budgie) or pure white (if it is a white-based budgie). The dark-eyed clear's dark eyes never lighten with age, hence the name.

You can tell a budgie is a dark-eyed clear because its eyes stay a dark plum color throughout its life. Comparatively, lutinos/albinos have red eyes and double-factor spangles have irises that lighten with maturity.

Also, the cere of the male dark-eyed clear does not change normally. Adult male dark-eyed clears have purple ceres. Adult female dark-eyed clears have the normal white/tan/brown ceres.

Basic Genetics:
Combination of recessive pied and clearflight pied
Details on dark-eyed clear genetics...

photo courtesy of Ghalib Al-Nasser	photo of "Trekkie" submitted by Candice	photo of "Lazarus" submitted by Kat
The dark-eyed clear variety is all clear with plum eyes.