Still quite early in gestation I would say. Here is something I found for you to read.
Most female veileds advertise their sexual maturity by displaying robins-egg blue colors on their sides and casque. Not all females will display this however. The best method to judge a female's receptiveness to breeding is to but the female with a male. How she reacts is the best indication. If the female turns black, gapes widely, hisses, and rocks back and forth, upon seeing a male, she is not ready for mating. If the female displays this behavior, remove her from the enclosure immediately return her to her own cage. If she is receptive, she will retain her passive coloration, and slowly walk away from the male. After some running around, copulation will generally take place. When the female has been inseminated, she will conveniently let the keeper know by altering her coloration dramatically. Inseminated females turn black with yellow and green spots. When this coloration is observed, remove the female. After a successful copulation, oviposition will occur between 30-40 days, however, it is advisable to put an egg laying chamber in the cage on day 20 just in case.