Blue recipes available for the rating 208 augments from the vendor after all, not from slicing missions.
Armstech, Armormech, and Synthweaving only.
Armormech: Versatile (main stat), Shield, and Absorb Augments
Armstech: Accuracy, Endurance, Power
Synthweaving: Alacrity, Defense, Critical Rating
Craft and then RE to learn the purples.