I have had nothing but good service from CTD and have orderd probably 10 times in the last year or so.
In their defence, the website says (at least now):
Snap Caps allow safe dry firing while protecting firing pin, sear and trigger. Excellent for firearms safety and storage. Dry Fire Dummy Rounds are made of tough Red or Blue plastic exterior with solid brass base. Ideal for training, working firearm actions and dry firing.
Notice it says Red or Blue
Not sure it would have made a difference to me either as long as the quality was the same.